Malicious PDF — malware analysis report

Static analysis result for SHA-256 230aa3c340fcf779…

MALICIOUS

PDF

66.6 KB Created: 2021-03-04 08:04:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 955913f8fa6bd04892a388d310616ab4 SHA-1: 7f4a3c0fd0d4cc6dfc9b472f218621d32cdfdd51 SHA-256: 230aa3c340fcf779cc718592e2ac21effadde28b228a1f75e2a2be85b0660224
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://jumiwimov.ru/award?keyword=moultrie+camera+glasses+manual PDF link annotation
    • https://cdn.sqhk.co/juwafajem/gliEXhh/62088907044.pdfIn PDF document text
    • https://fanamixaxa.weebly.com/uploads/1/3/4/0/134017579/wipawawujatafaxil.pdfIn PDF document text
    • https://cdn.sqhk.co/numevaju/Vqmghii/26533363769.pdfIn PDF document text
    • https://wagemerefav.weebly.com/uploads/1/3/2/7/132712282/murajodejakito_sekubi_ravigikegizu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383687/normal_6027395dcd1c2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460070/normal_5ffabd9c3e16d.pdfIn PDF document text
    • https://jenifamizoj.weebly.com/uploads/1/3/5/3/135319667/3621645.pdfIn PDF document text
    • https://lixazasowab.weebly.com/uploads/1/3/4/5/134588429/demulukas_zivetuwabi.pdfIn PDF document text
    • http://mobufuwiwid.medianewsonline.com/44733562247.pdfIn PDF document text
    • http://koxelovanalimu.getenjoyment.net/11282033619.pdfIn PDF document text
    • https://zumonula.weebly.com/uploads/1/3/5/3/135323502/6550511.pdfIn PDF document text
    • https://fevowavekotaxuw.weebly.com/uploads/1/3/4/6/134635114/8855631.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4504641/normal_5ffa618c95406.pdfIn PDF document text
    • https://rabibenexu.weebly.com/uploads/1/3/5/3/135319922/11e01bb7a42571.pdfIn PDF document text
    • https://nuzalegexokoz.weebly.com/uploads/1/3/0/8/130814177/raparusujuzuruz.pdfIn PDF document text
    • https://putoluvutawubu.weebly.com/uploads/1/3/1/4/131437806/6985155.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c7dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7DD 5124 bytes
SHA-256: c54eeafaa91d5cff19d5f2fbdb3b82250cc694404db083a135e2e0ce162d554f
font_01_sfnt_off0000d93e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD93E 10320 bytes
SHA-256: e10769b1f9f2de4de83160df9af0cc431ac99ab07587c4f36d60ebf754c61e6f

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