Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc40c27a1797bea1…

MALICIOUS

PDF

70.0 KB Created: 2021-02-13 17:07:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 40b8844b7f79b9e214775d295cc150ab SHA-1: d634fec215b817da8fe10f2d1a385ab32b59f809 SHA-256: cc40c27a1797bea110523c087a38c7573995e126196666f636c369e0bff1fe09
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://baarspo.ru/123?utm_term=mario+kart+64+unblocked PDF link annotation
    • http://zutixononazetu.iblogger.org/3ds_emulator_free_for_android_apk.pdfIn PDF document text
    • https://lutigasudubuwa.weebly.com/uploads/1/3/2/6/132695203/93ca866de998.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403683/normal_5fed3d5784f8c.pdfIn PDF document text
    • https://cdn.sqhk.co/mixubiki/Mgjhh9H/72115768176.pdfIn PDF document text
    • https://futuratolofuzup.weebly.com/uploads/1/3/5/3/135399438/lenawetata.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426407/normal_6027559189273.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489237/normal_600715f6dc1c1.pdfIn PDF document text
    • https://cdn.sqhk.co/fifenije/dgiON5J/37146441161.pdfIn PDF document text
    • https://pivamuwonojazop.weebly.com/uploads/1/3/0/9/130969183/3888915.pdfIn PDF document text
    • http://kaguveka.22web.org/lofifabekiziremebegaxim.pdfIn PDF document text
    • https://vedudogekikusiw.weebly.com/uploads/1/3/1/1/131164168/bejaboreduz.pdfIn PDF document text
    • http://ejinaya.com/axis_bank_rtgs_form_2020_download1vn78.pdfIn PDF document text
    • https://cdn.sqhk.co/relulapezele/ahc4GJ1/zoxud.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xefezesebusu/76450702284.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/arm_compute_library_performance.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_off0000d571.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD571 5204 bytes
SHA-256: be6feaf9244bf79dc3773b690fa5ba91acd50613b5032e4eb57cbed24ca16dea
font_01_sfnt_off0000e746.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE746 10756 bytes
SHA-256: 5d8f13d42d116b3f03951070e00caddbcf927f09022dcb25ff7731be7ff64260