Malicious PDF — malware analysis report

Static analysis result for SHA-256 5526c89141bb3141…

MALICIOUS

PDF

116.1 KB Created: 2022-09-09 11:58:22 +00:00 Authoring application: orryutin (via PDF Master 1.0.1) First seen: 2026-05-19
MD5: 172c45ec4460193c518851a0910fb5eb SHA-1: ed4dea8404cd678a69f29e9d86d4dcf8c2e3c676 SHA-256: 5526c89141bb3141b3289a5a81e0a118c2abe5592ac443be0e3442257e1623d8
232 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0013

Heuristics 8

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://blogbasters.com/aprons/cartage/empanadas/densest/tashiro/fictitious.ZG93bmxvYWR8WThLTjJ4b2MzeDhNVFkyTWpZNE1ETTVNSHg4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA?TTMgRGF0YSBSZWNvdmVyeSBLZXlnZW4gRG93bmxvYWRsTTM PDF link annotation
    • https://hidden-beach-88555.herokuapp.com/deaconil.pdfIn PDF document text
    • https://obscure-mesa-51867.herokuapp.com/benrexa.pdfIn PDF document text
    • https://efekt-metal.pl/witaj-swiecie/In PDF document text
    • https://farmaciacortesi.it/ritmovi-za-narodnu-muziku-free-download-werbung-biene-reifen-install/In PDF document text
    • https://tarpnation.net/wp-content/uploads/2022/09/Naseeb_Hindi_Movie_Full_Hd_720p_HOT-1.pdfIn PDF document text
    • https://allweboutreach.com/wp-content/uploads/2022/09/Daytona_Xp_HUN_32bit_HOT.pdfIn PDF document text
    • https://www.enriquetabara.com/wp-content/uploads/2022/09/Aimersoft_DVD_Ripper_v1114_Keygen_keygen.pdfIn PDF document text
    • http://match2flame.com/quake-2-upd-full-version-windows-pc-torrent/In PDF document text
    • https://laculinaria.de/faceware-live-2-0-cracked-exclusive/In PDF document text
    • https://lockdownrank.com/wp-content/uploads/2022/09/harflec.pdfIn PDF document text
    • https://ourlittlelab.com/xforce-keygen-64bits-featurecam-2013-top/In PDF document text
    • http://cubaricosworld.com/wp-content/uploads/2022/09/Gouru_Tirupati_Reddy_Vastu_Book_Free_Download.pdfIn PDF document text
    • https://www.cdnapolicity.it/wp-content/uploads/2022/09/Civil_3D_2013x86_X64_Keygen_Serial_Key-1.pdfIn PDF document text
    • https://www.camhalalguide.com/wp-content/uploads/2022/09/Codigo_de_activacion_hawx_2_pc.pdfIn PDF document text
    • https://salty-fjord-95307.herokuapp.com/allfle.pdfIn PDF document text
    • https://safe-atoll-55904.herokuapp.com/Cs16full_V7_Exe.pdfIn PDF document text
    • https://powerful-reaches-58593.herokuapp.com/faballa.pdfIn PDF document text
    • http://www.sataal.com/wp-content/uploads/2022/09/whalgir.pdfIn PDF document text
    • http://weedcottage.online/?p=132410In PDF document text
    • https://www.vacanzenelcilento.info/wp-content/uploads/2022/09/True_Dbgrid_Pro_7_Download_TOP.pdfIn PDF document text
    • https://farmaciacortesi.it/ritmovi-za-narodnu-muziku-free-download-werbung-biene-reifen-In PDF document text
    • https://tarpnation.net/wp-In PDF document text
    • https://www.enriquetabara.com/wp-In PDF document text
    • http://cubaricosworld.com/wp-In PDF document text
    • https://www.cdnapolicity.it/wp-In PDF document text
    • https://www.camhalalguide.com/wp-In PDF document text
    • https://www.vacanzenelcilento.info/wp-In PDF document text
    • http://blogbasters.com/aprons/cartage/empanadas/densest/tashiro/fictitious.zg93bmxvywr8wthltjj4b2mzedhnvfkytwpzne1ettvnshg4twpvnu1iedhlrtbwsuzkdmntundjbvz6y3lcyldfmu1vbejesuzzeulgqkvsbda?ttmgrgf0ysbszwnvdmvyesblzxlnzw4grg93bmxvywrsttmIn 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: efekt-metal.pl 339 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001bc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BC4 84508 bytes
SHA-256: 2b7ba551bea82cc3307397981c1dbeb1b78486f95f2eb14e5e58d4e1b24edb0c
font_01_sfnt_off0000a3b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3B0 83036 bytes
SHA-256: 6d13e73e85a502a13969f6a5eaecd0b275a0868c045f80b7d64ed55d70678261