Malicious PDF — malware analysis report

Static analysis result for SHA-256 0194c91f8607426e…

MALICIOUS

PDF

66.8 KB Created: 2020-12-21 05:36:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 9d0a2153b6914cecea9a79f846809cee SHA-1: dd29a22129b30aefbea3335b2c3cd97939a80e65 SHA-256: 0194c91f8607426e0763c628db5e8904acfeb12cc7633e9b0a4fedc817a12218
196 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://trafffe.ru/aws?utm_term=digital+marketing+process+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4371005/normal_5f90a6ecf1d8c.pdfIn PDF document text
    • https://vajibudutoneraz.weebly.com/uploads/1/3/4/3/134345344/10d0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389571/normal_5f9044bf3bc40.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413986/normal_5fdff8b863a94.pdfIn PDF document text
    • https://mokogexikimowo.weebly.com/uploads/1/3/4/3/134321985/waveresi.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/wemazun/bekagexur.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc52db3104edf1d779cfc51/t/5fc681842dd96f5918ceed16/1606844805725/leap_day_game_king.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66b6a58f-d930-4d02-a531-ea109ae299ce/28352761905.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd37863f59a2572d8ffde5/t/5fde43b2f11f517dbbbf29e5/1608401842787/19597012905.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1626bd1-0d5a-43bf-9b73-5d5651c1d335/ancient_greek_houses_architecture.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e14ddbd9-debe-4aca-95f0-d5f4d6538dec/98025362999.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9362a6ce-afcc-47be-b7da-6874369e7740/14483620811.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/80047023426.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/piwovidezisunafefugunidex.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/lazarus_free_pascal_compiler.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_off0000c9ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9AD 5536 bytes
SHA-256: 9c1c69c71363112afd4005bcfe5ab139a1511f28ab2fbd4c2bf91a0c261e7659
font_01_sfnt_off0000dc77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC77 10048 bytes
SHA-256: 1cd071b968fe7e70c6e749a4b8c52fc28c05eec16fa5a5c000acb258f6d7ef82

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