Malicious PDF — malware analysis report

Static analysis result for SHA-256 e19f01986599b71b…

MALICIOUS

PDF

69.6 KB Created: 2020-11-30 23:17:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: e44b72cf9fda853b28272b4cf323cf2d SHA-1: 5e3efd0860c175ce9c096dc7d21dc4896b3e7904 SHA-256: e19f01986599b71b4c981b18898f5bfd92d6b563287c8fa97b208de0f61a0345
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffine.ru/123?utm_term=geometry+review+packet+answers In PDF document text
    • https://cdn-cms.f-static.net/uploads/4413125/normal_5f9d84767923e.pdfIn PDF document text
    • https://mivijupa.weebly.com/uploads/1/3/4/5/134578330/jebavadanefu_memodejiz_tiwozipez_jawaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408197/normal_5fb5218889a96.pdfIn PDF document text
    • https://vogoworelo.weebly.com/uploads/1/3/4/2/134266182/fepanegigip.pdfIn PDF document text
    • https://moguvikob.weebly.com/uploads/1/3/0/8/130874292/6594843.pdfIn PDF document text
    • https://depufavekozumel.weebly.com/uploads/1/3/4/0/134017714/1634083.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/1515306.pdfIn PDF document text
    • https://mopepeserowote.weebly.com/uploads/1/3/4/6/134621402/gigapigobijo_jisopijafu_kenijanibugap.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/47633e20-86a7-405a-80ac-0111e2b5348f/21750154623.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1be9710-53de-4536-91be-a1c0a65c512b/liwuboxurexujoz.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/95229385810.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80912c10-b1cc-4f1e-bed7-ac647a4803d7/31716653372.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_off0000d014.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD014 5396 bytes
SHA-256: 7c0cf56bf5af63d6e495794fe193dfd1ce03caa58a8bc0e873ae7ac5fcf0a6e6
font_01_sfnt_off0000e27c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE27C 11652 bytes
SHA-256: 0139f0ca7c1868b6467237f8f9514284c695515bba8bb202a89803fd98569997

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