Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0cf7c3d2bfcbb59…

MALICIOUS

PDF

115.7 KB Created: 2022-09-10 23:51:57 +00:00 Authoring application: queahek (via PDF Master 1.0.1) First seen: 2026-04-05
MD5: 2e1e8db5cd5ea333124a2d53bbc77bf8 SHA-1: df35ab711afc36d7ee94e7c8c4208afb0d9392b0 SHA-256: f0cf7c3d2bfcbb59f6f0ea133d1d6dbe3d6b5e1449e6c4dca841956ee58f379b
289 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0015

Heuristics 9

  • Invisible/repeated PDF links deliver payload file critical PDF_REPEATED_PAYLOAD_LINK_LURE
    PDF uses invisible link annotations and points to a direct payload download. Repeated invisible links or lure-like payload names such as document/unlock/verify archives match malware-delivery PDF carriers where the page is only a prompt and the real payload is fetched from the linked URL.
  • Cracked-software lure uses shortlink/download gateway critical PDF_CRACKED_SOFTWARE_SHORTLINK_LURE
    PDF visible text advertises a crack, serial number, archive, or pirated-software download and pairs it with a shortlink or encoded download gateway. This is a high-confidence social-engineering carrier for unwanted software or droppers; the PDF itself is not a parser exploit.
  • Cracked-software lure uses download-gateway redirectors high PDF_CRACKED_SOFTWARE_REDIRECTOR_LINK_FARM
    PDF contains multiple cracked-software/keygen/serial-key lure links together with long encoded download-gateway URLs or known crack-download redirector hosts. This is stronger than generic piracy vocabulary: the document is an SEO lure that funnels users through redirect/download infrastructure commonly used for adware, unwanted software, or droppers.
  • PDF links to a cracked-software download doorway (base64-obfuscated) high PDF_CRACKED_SOFTWARE_DOWNLOAD_DOORWAY
    PDF's embedded link hides a pirated-software title as a base64 blob inside the URL path/query (and/or carries the ``download|`` doorway-template marker), rather than in visible text. This is a TCPDF-generated SEO doorway that ranks for software-piracy searches and funnels users to fake 'crack/keygen' download pages distributing adware, potentially-unwanted programs, or droppers. The base64 encoding is deliberate obfuscation to evade plaintext lure rules; the PDF itself carries no parser exploit — the risk is the linked crack-download destination.
  • PDF link farm advertises cracked/pirated software medium PDF_CRACKED_SOFTWARE_LURE
    PDF contains many clickable links whose targets use cracked-software, keygen, serial-key, or warez vocabulary. These are SEO-spam lure documents that rank for software-piracy searches and route users to fake 'crack' download pages distributing potentially-unwanted programs, adware, or droppers. The PDF itself carries no exploit — the risk is the linked destinations.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://rocketcarrental.com/cmEgb25lIGZ1bGwgaGQgbW92aWUgZG93bmxvYWQga2lja2FzcyB0b3JyZW50cmE/?lambchop=mans.blackberries&ZG93bmxvYWR8ZzRqY2pGMk1ueDhNVFkyTWpZNE1ETTVNSHg4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA=fuschias&suitless=trapped PDF link annotation
    • http://moonreaderman.com/serialdedriverturbocrack-__hot__/In PDF document text
    • http://shalamonduke.com/?p=118758In PDF document text
    • http://yotop.ru/2022/09/11/aaina-movie-in-hd-free-download-better/In PDF document text
    • https://poll.drakefollow.com/sout.js?v=1.1.1In PDF document text
    • https://techstoserve.com/wp-content/uploads/2022/09/taiko_no_tatsujin_plus_song_pack.pdfIn PDF document text
    • https://movingbay.com/xbox360emu-30zip-upd/In PDF document text
    • https://farmaciacortesi.it/a-woman-in-brahmanism-3gp-telugu-full-repack-mobile-movie-free-download-hit/In PDF document text
    • http://persemediagroup.com/xforcekeygensketchbookpro201532bitfreedownloadexe-2021/In PDF document text
    • http://rsglobalconsultant.com/behind-enemy-lines-2001-brrip-720p-english-subtitles-best/In PDF document text
    • https://openaidmap.com/ledenodoba1sinkroniziranonahrvatski-__full__/In PDF document text
    • https://bhatimindcare.com/wp-content/uploads/2022/09/Redshift_2641_Crack__441_MB.pdfIn PDF document text
    • https://indoretalk.com/wp-content/uploads/2022/09/kayldeid.pdfIn PDF document text
    • https://bustedrudder.com/advert/railworks-ts2014-christrains-ns-dd-ar-double-decker-hack-torrent-link/In PDF document text
    • http://pzn.by/?p=86312In PDF document text
    • https://www.pivatoporte.com/wp-content/uploads/2022/09/Br_Automation_Studio_40_Cracked_VERIFIED-1.pdfIn PDF document text
    • https://balancingthecrazy.com/2022/09/10/download-link-oracle-11-2-0-4-for-windows-64-46l/In PDF document text
    • https://onlineshopmy.com/wp-content/uploads/2022/09/PATCHED_AutoVue_Enterprise_Visualization_2021.pdfIn PDF document text
    • https://ibipti.com/titikbalikperadabanfritjofcaprapdf18-hot/In PDF document text
    • https://silkfromvietnam.com/the-possession-2012-full-movie-watch-online-free-in-hindi-_top_/In PDF document text
    • https://dallahcoffee.com/download-matlab-2013b-full-repack-crack/In PDF document text
    • https://farmaciacortesi.it/a-woman-in-brahmanism-3gp-telugu-full-repack-mobile-movie-free-In PDF document text
    • https://bustedrudder.com/advert/railworks-ts2014-christrains-ns-dd-ar-double-decker-hack-torrent-In PDF document text
    • https://www.pivatoporte.com/wp-In PDF document text
    • https://onlineshopmy.com/wp-In PDF document text
    • http://rocketcarrental.com/cmegb25ligz1bgwgagqgbw92awugzg93bmxvywqga2lja2fzcyb0b3jyzw50cme/?lambchop=mans.blackberries&zg93bmxvywr8zzrqy2pgmk1uedhnvfkytwpzne1ettvnshg4twpvnu1iedhlrtbwsuzkdmntundjbvz6y3lcyldfmu1vbejesuzzeulgqkvsbda=fuschias&suitless=trappedIn PDF document text
    • https://bhatimindcare.com/wp-content/uploads/2022/09/redshift_2641_crack__441_mb.pdfIn PDF document text
    • http://www.tcpdf.orgIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://www.aiim.org/pdfa/ns/extension/In PDF document text
    • http://www.aiim.org/pdfa/ns/schema#In PDF document text
    • http://www.aiim.org/pdfa/ns/property#In PDF document text
    • http://www.aiim.org/pdfa/ns/id/In PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001d5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D5E 84508 bytes
SHA-256: 2b7ba551bea82cc3307397981c1dbeb1b78486f95f2eb14e5e58d4e1b24edb0c
font_01_sfnt_off0000a54a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA54A 83036 bytes
SHA-256: 6d13e73e85a502a13969f6a5eaecd0b275a0868c045f80b7d64ed55d70678261