Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f80f0c7b99ab85b…

MALICIOUS

PDF

72.2 KB Created: 2021-02-06 13:58:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2a7934f908c7ec9fa3254772e5d26b44 SHA-1: 9eea17221d62a5e8e5f749a4fb3230cf93c025c4 SHA-256: 5f80f0c7b99ab85b4796e57723479bcaee1b2af704513e8acb56c96040c68655
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://jacksth.ru/aws?utm_term=flute+music+sheets+free PDF link annotation
    • https://vekaforu.weebly.com/uploads/1/3/4/7/134747957/kadorufiwoluwo.pdfIn PDF document text
    • http://buyfastedcircle.xyz/k2_shadow_skatesvq42v.pdfIn PDF document text
    • https://toralalog.weebly.com/uploads/1/3/1/4/131436966/poked-joropifow.pdfIn PDF document text
    • https://vatopefo.weebly.com/uploads/1/3/1/3/131398509/lesirupaxef-ritik.pdfIn PDF document text
    • http://stonersfranchise.com/22302074629s0s5e.pdfIn PDF document text
    • https://xakepimefinawam.weebly.com/uploads/1/3/4/9/134903333/nejobufi.pdfIn PDF document text
    • https://vafoguvisijun.weebly.com/uploads/1/3/4/8/134887412/putixiteje.pdfIn PDF document text
    • https://fuxakenaz.weebly.com/uploads/1/3/4/5/134589300/95d7da8ea461.pdfIn PDF document text
    • http://hurleyshamburgers.com/80657858474qfib3.pdfIn PDF document text
    • https://fosuwelu.weebly.com/uploads/1/3/2/6/132695698/xobomokefoxuxa.pdfIn PDF document text
    • https://kiteginizi.weebly.com/uploads/1/3/1/8/131871518/lidegotu.pdfIn PDF document text
    • https://jafedojinow.weebly.com/uploads/1/3/0/9/130969492/1173996.pdfIn PDF document text
    • http://gratoraama.space/516735605w2o7w.pdfIn PDF document text
    • https://koxepaje.weebly.com/uploads/1/3/5/3/135350813/5292e.pdfIn PDF document text
    • https://laxigotugib.weebly.com/uploads/1/3/0/9/130969680/kijivatake.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bamusob.rf.gd/movies_new_2018_hd.pdfIn PDF document text
    • http://ralupuwegilad.rf.gd/70630187089.pdfIn PDF document text
    • http://nukasero.epizy.com/hd_car_wallpapers_for_android_free.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_off0000dfb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB6 4864 bytes
SHA-256: dd42da48539077c429b9de9d5863b3044f3f16fe9d45e7a10ba3688267c35233
font_01_sfnt_off0000f01d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF01D 10444 bytes
SHA-256: 9338f58ad265941072062721c996b521c3f6767aeeb60469a49518a39e632837

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