Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ac5bee1624056f4…

MALICIOUS

PDF

81.8 KB Created: 2021-04-01 00:46:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 100aefb9825eac11ad6597f283f80eaf SHA-1: 726639d1b229c80802e733e3154e3c54614f85f6 SHA-256: 8ac5bee1624056f4f1955b3d236cd9f47c763956d8859255bbadf123a987e762
98 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • ClamAV scan did not complete info CLAMAV_SCAN_INCOMPLETE
    ClamAV scan on this file did not complete (ClamAV error (exit 2)); the verdict reflects only static heuristics. The result is not cached so a later submission will retry the scan.
  • 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 https://dafemum.ru/wix?keyword=danganronpa+trigger+happy+havoc+characters+deaths
    • https://cdn.sqhk.co/rubupidorinu/e6CXnjf/dunupafiku.pdf
    • https://fasefipuronupa.weebly.com/uploads/1/3/4/4/134471496/nolalufawusi.pdf
    • https://static.s123-cdn-static.com/uploads/4413867/normal_5fc7a7820c095.pdf
    • https://numezuledidi.weebly.com/uploads/1/3/4/0/134096646/10d726.pdf
    • https://jijaxiwiruba.weebly.com/uploads/1/3/5/3/135333012/5387778.pdf
    • https://cdn-cms.f-static.net/uploads/4383449/normal_60608e487f0d8.pdf
    • https://cdn.sqhk.co/rodisukipi/igNgcjb/movie_night_snacks_delivery.pdf
    • https://cdn.sqhk.co/relulapezele/ljhhgh1/doomsday_survival_kit_costco.pdf
    • https://pudukodup.weebly.com/uploads/1/3/1/4/131407572/mubowidibifodu-fukifuw.pdf
    • https://static.s123-cdn-static.com/uploads/4446285/normal_5fce17c3827cb.pdf
    • http://dewisazovuvoxi.mywebcommunity.org/how_to_save_cisco_config.pdf
    • https://tilifopufobi.weebly.com/uploads/1/3/6/0/136049844/garupejepuvetowuleku.pdf
    • https://libidipoxojab.weebly.com/uploads/1/3/5/9/135981854/ab17b164e.pdf
    • https://cdn.sqhk.co/parabeset/gto5nhc/bupilofaxivokurit.pdf
    • https://wisetigu.weebly.com/uploads/1/3/4/3/134357320/1168736.pdf
    • https://cdn.sqhk.co/lojosewude/IUjejch/spanish_to_english_audio_translation_free.pdf
    • http://kowojolajamuv.getenjoyment.net/fipemexavipugikezan.pdf
    • https://cdn-cms.f-static.net/uploads/4367271/normal_602ddcedd9213.pdf
    • https://lopuxewununoj.weebly.com/uploads/1/3/4/7/134748711/446519.pdf
    • https://63b1f34b-4847-450f-8d9a-4788d10e1cf5.filesusr.com/ugd/451a43_5bfdfc166139415b843ffd0cd9ff972d.pdf?index=true
    • https://7afd96e6-4611-46d4-9b98-d111b897c281.filesusr.com/ugd/154221_9cc9289342114299af8e7d88aadfa1c5.pdf?index=true
    • https://68358877-4ee6-4e53-94f7-4bd9665c1f53.filesusr.com/ugd/3bbd68_0fabf93ea0074d62b19ca80753ec2504.pdf?index=true
    • http://ritumogadoj.onlinewebshop.net/arteriosclerosis_tratamiento.pdf
    • https://2080fafa-2491-4ac3-8118-a138f33bff34.filesusr.com/ugd/822ecd_bdcc1a2e80d045b689d879a52e1e0124.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f209.bin
a26675f3a4153655b360b72ac84d5790e49bf87f4f823ceac3ed5a1e33e5ff6b
pdf-font-stream PDF embedded font (sfnt) at offset 0xF209 4076 bytes