Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdfac1669efe9319…

MALICIOUS

PDF

69.0 KB Created: 2021-02-18 23:58:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: c68b5e588c834e7335297ce6ceb1879d SHA-1: 7051b7da4ed773486cf752a68af1c698b1bda695 SHA-256: cdfac1669efe9319614f597365f028e45898435d4ecfc0d05f08252b4478d10c
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://seumenha.ru/wix?keyword=padre+nuestro+oracion+in+english PDF link annotation
    • https://cdn.sqhk.co/lupokuna/hihWVtQ/39385422533.pdfIn PDF document text
    • https://suxapenogabako.weebly.com/uploads/1/3/4/6/134602080/ranewim.pdfIn PDF document text
    • https://cdn.sqhk.co/dodamewope/iemRPaB/guzuxemagasozenigeg.pdfIn PDF document text
    • https://jajibesuwazigix.weebly.com/uploads/1/3/1/3/131383486/4e26c0652b4da0f.pdfIn PDF document text
    • https://newadagunezadev.weebly.com/uploads/1/3/4/6/134684801/dudewawi_vizesukitipogow_wavasobetu_rewuga.pdfIn PDF document text
    • https://mumovukejepi.weebly.com/uploads/1/3/1/4/131483147/69b93b074bb13.pdfIn PDF document text
    • https://cdn.sqhk.co/fapetemiji/igkejg4/lobasujowarezaje.pdfIn PDF document text
    • https://cdn.sqhk.co/sulubejes/giV0Wia/61640398790.pdfIn PDF document text
    • https://cdn.sqhk.co/sebixodof/hbjayha/xoramoguk.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwefuxab/ifvUjfI/verodasesibuxodof.pdfIn PDF document text
    • http://fuckfrsky.com/24_hole_chromatic_harmonica_lessons8t7kt.pdfIn PDF document text
    • https://gebifafotuzuwi.weebly.com/uploads/1/3/5/3/135324040/jigulumajape.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/dibedamoka/34587594473.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/vaxegarovexuwagebixujedod.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/reference_sheet_art.pdfIn PDF document text
    • https://s3.amazonaws.com/lezerawe/slate_digital_vst_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_off0000d355.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD355 5204 bytes
SHA-256: 107ca21b82ab1e7c08a95383708805bdb447607014cd3adc2f99045246520d1f
font_01_sfnt_off0000e4fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4FB 10044 bytes
SHA-256: 43a70c87270c3a1cea9e0d5627b39c49809817c843d415cfe0abb58a17a82f35