Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f3a4aa5fd4e2bb4…

MALICIOUS

PDF

115.4 KB Created: 2022-09-09 14:50:18 +00:00 Authoring application: addmala (via PDF Master 1.0.1) First seen: 2026-05-03
MD5: 35ff7539dbbc7dda9f0641955d3f5de8 SHA-1: 2c53f87b2c8a5a981ba6ceba2c2380c2065611b3 SHA-256: 5f3a4aa5fd4e2bb45663dc863a72fed249398a2218d3f0bdbe5b0ea840540d7a
144 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0009

Heuristics 6

  • 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.
  • 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://dormister.com/bogota/catnaping?furnishings=/lettings/U3Ryb25naG9sZCBDcnVzYWRlciBNYXBzIFBhY2sU3R/ZG93bmxvYWR8eEU3T1dZeU1ueDhNVFkyTWpZNE1ETTVNSHg4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA/lampoon/mississippi/perfecta PDF link annotation
    • https://www.sensoragencia.com/wp-content/uploads/2022/09/ip_man_4_online_sa_prevodom.pdfIn PDF document text
    • https://yemensouq.com/wp-content/uploads/2022/09/X_Force_Adobe_Cs6_Keygen_Crackl.pdfIn PDF document text
    • https://www.debeiaard-utrecht.nl/advert/dashavtar-telugu-free-download-top/In PDF document text
    • http://travelfamilynetwork.com/?p=62487In PDF document text
    • https://heidylu.com/sybase-powerdesigner-16-5-0-3982-bean/In PDF document text
    • https://evening-badlands-60972.herokuapp.com/FULL_SolidCAM_2017_SP0_x64_for_SolidWorks_20122017.pdfIn PDF document text
    • https://educationnews.co.ke/advert/kunci-jawaban-akuntansi-biaya-william-k-carter-edisi-14-_hot_/In PDF document text
    • http://jwbotanicals.com/vray-max-2013-x86-rar-exclusive/In PDF document text
    • https://tranquil-depths-02678.herokuapp.com/inazuma_eleven_3_the_ogre_download_english.pdfIn PDF document text
    • https://theferosempire.com/wp-content/uploads/2022/09/hawflam.pdfIn PDF document text
    • http://www.sport1ne.com/?p=33677In PDF document text
    • https://nhadatvip.org/bit-che-guevara-plus-pro-1-60-crack-serial-key-free-keygen/In PDF document text
    • https://polar-retreat-32380.herokuapp.com/zalhald.pdfIn PDF document text
    • https://guarded-meadow-07575.herokuapp.com/as_musicas_da_carochinha_vol_1_download.pdfIn PDF document text
    • https://hidden-ocean-30530.herokuapp.com/tevdeny.pdfIn PDF document text
    • https://aqueous-brushlands-01491.herokuapp.com/palmela.pdfIn PDF document text
    • https://fam-dog.ch/advert/ableton-live-10-1-9-crack-incl-torrent-2020-update-version-free-here-__exclusive__/In PDF document text
    • https://ssmecanics.com/driver-monitor-samsung-50000-1-top/In PDF document text
    • http://www.atlanticracingcars.com/wp-content/uploads/2022/09/Pirates_Of_The_Caribbean_Game_Crack_Download.pdfIn PDF document text
    • https://dealstoheal.com/?p=40588In PDF document text
    • https://evening-In PDF document text
    • https://educationnews.co.ke/advert/kunci-jawaban-akuntansi-biaya-william-k-carter-In PDF document text
    • https://tranquil-In PDF document text
    • https://fam-dog.ch/advert/ableton-live-10-1-9-crack-incl-torrent-2020-update-version-free-In PDF document text
    • http://www.atlanticracingcars.com/wp-In PDF document text
    • http://www.atlanticracingcars.com/wp-content/uploads/2022/09/pirates_of_the_caribbean_game_crack_download.pdfIn PDF document text
    • http://dormister.com/bogota/catnaping?furnishings=/lettings/u3ryb25nag9szcbdcnvzywrlcibnyxbzifbhy2su3r/zg93bmxvywr8eeu3t1dzeu1uedhnvfkytwpzne1ettvnshg4twpvnu1iedhlrtbwsuzkdmntundjbvz6y3lcyldfmu1vbejesuzzeulgqkvsbda/lampoon/mississippi/perfectaIn 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
🗂 Part of campaign: secureserver.net 1471 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001b5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B5C 84508 bytes
SHA-256: 2b7ba551bea82cc3307397981c1dbeb1b78486f95f2eb14e5e58d4e1b24edb0c
font_01_sfnt_off0000a348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA348 83036 bytes
SHA-256: 6d13e73e85a502a13969f6a5eaecd0b275a0868c045f80b7d64ed55d70678261