Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb594d42d83c9e22…

MALICIOUS

PDF

68.9 KB Created: 2021-02-21 02:37:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8d722c622d37276716f85ea69c75438d SHA-1: 0e304c2ff41bcfe1c0158120963e035b9817ebfb SHA-256: bb594d42d83c9e2232edd2d41ad48dbb5187b76af97c5d6be60122e580f3c5b8
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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
  • 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.
  • 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://bologen.ru/wix?keyword=biology+genetics+quiz+answer+key PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4416669/normal_6029a8341e160.pdfIn PDF document text
    • http://kinorio5.xyz/gomowakafivakollewz0.pdfIn PDF document text
    • https://rulusekiraz.weebly.com/uploads/1/3/5/3/135322703/kadijul_gesikebofeja_nenem.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380380/normal_5fedf3f8dfe3f.pdfIn PDF document text
    • http://excschool.ru/338243802720tusw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374522/normal_5fe50fef3d8d5.pdfIn PDF document text
    • http://medicalpracticementor.com/natural_color_gel_nail_polishzc266.pdfIn PDF document text
    • https://zabuxowinuj.weebly.com/uploads/1/3/4/8/134874463/6783450.pdfIn PDF document text
    • https://mevemedetu.weebly.com/uploads/1/3/1/8/131871578/92c88eb6b50c26.pdfIn PDF document text
    • https://nurojitare.weebly.com/uploads/1/3/2/6/132682966/7902947.pdfIn PDF document text
    • http://badgesverified.com/l_adjectif_qualificatif_pithte_exercicesetfj4.pdfIn PDF document text
    • http://robot3.site/futorijakidiwikwgrk.pdfIn PDF document text
    • https://wufikasuruxur.weebly.com/uploads/1/3/1/6/131636700/1445493.pdfIn PDF document text
    • https://diruwogedow.weebly.com/uploads/1/3/1/3/131382439/mamufewutibuvunixur.pdfIn PDF document text
    • https://rosififobagas.weebly.com/uploads/1/3/1/1/131164218/wesugokezimesikotiwa.pdfIn PDF document text
    • http://mini-camera-super.club/free_coc_gems_generator_no_survey08ijy.pdfIn PDF document text
    • https://jikumuwalomaj.weebly.com/uploads/1/3/1/3/131383204/majefirebafiwaxixet.pdfIn PDF document text
    • http://fc-aromat.ru/what_do_crows_eat_in_the_winter_timeek027.pdfIn PDF document text
    • https://mobisikude.weebly.com/uploads/1/3/1/6/131606420/6063162.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bb45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB45 5448 bytes
SHA-256: a6e63e43903f1fd920ec62e6bd85641d8a07c22f40c9cb9842fc315338198054
font_01_sfnt_off0000ce0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE0A 10256 bytes
SHA-256: 8d3d1f7e2e4b96ba9751450c6ff121321695de13e581905ceaf307e62b614167
font_02_sfnt_off0000f0d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D5 16144 bytes
SHA-256: 18f56b7fae04e07bc119a468ad323bdda099da77b0772854d1c47cc1f39b9f3b

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