Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5b35ab4bb2d1d76…

MALICIOUS

PDF

72.3 KB Created: 2021-02-22 00:43:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ac6640c90311e2bba3e377afee49cd12 SHA-1: 08dd4c25f12829bd17332b307bda1affb44ba0d7 SHA-256: d5b35ab4bb2d1d76db05179a3e787d2d894b68049b4ecbde91b81ab12de2fc07
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://maypoin.ru/wix?keyword=atdhe.net+tv+streaming PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4411709/normal_60282f54578c6.pdfIn PDF document text
    • https://legukofa.weebly.com/uploads/1/3/5/3/135318177/gizuveso.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480744/normal_5fd876b051bc7.pdfIn PDF document text
    • https://pixadodo.weebly.com/uploads/1/3/2/7/132740612/rewolifaz.pdfIn PDF document text
    • http://ostanni.fun/how_many_calories_in_a_piece_of_carvel_ice_cream_cakect2ko.pdfIn PDF document text
    • https://vavuvulo.weebly.com/uploads/1/3/2/8/132814906/6065791.pdfIn PDF document text
    • https://werevofapopaja.weebly.com/uploads/1/3/4/4/134492388/d440c0ab.pdfIn PDF document text
    • https://sudarotabodubig.weebly.com/uploads/1/3/1/4/131407445/9702006.pdfIn PDF document text
    • http://rastet-malysh.ru/257118591932jzh9.pdfIn PDF document text
    • http://retapobu.iblogger.org/guidepost_solutions_limited.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wewuwoxije.epizy.com/3061989737.pdfIn PDF document text
    • http://xamudakosenezi.rf.gd/lanewuxaba.pdfIn PDF document text
    • http://pojasiw.rf.gd/fraction_addition_worksheets_with_answers.pdfIn PDF document text
    • http://fikikozazilut.rf.gd/xepuwuzitivenilasugewa.pdfIn PDF document text
    • http://novosumagib.epizy.com/bagdi_ki_rabdi_full_video.pdfIn PDF document text
    • http://gazepofibugas.epizy.com/xominemekiwagufeliparo.pdfIn PDF document text
    • http://bopufadepop.epizy.com/nutenanizesawufizelagej.pdfIn PDF document text
    • http://wovikoverule.epizy.com/zigexaxasirurozut.pdfIn PDF document text
    • http://taxifegizuni.epizy.com/skyrim_mod_guide.pdfIn 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dde4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE4 5288 bytes
SHA-256: 69ef4eb60053387a81d5bf85761feccbb78cd7409497e18ccd780bd2505e6600
font_01_sfnt_off0000efc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC1 10684 bytes
SHA-256: c3d7732ef6bc8eb6260325f0e428126fc7b4b0240b50229b44a6859e67fb543c

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