Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7be4569a36a6184…

MALICIOUS

PDF

72.7 KB Created: 2021-02-15 15:25:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3825b8d5661c4db091aad271a33dfa6b SHA-1: 14d6155c923f337f8b6fb8fd5e69f83300432a0b SHA-256: f7be4569a36a618446beeec24887bd94d7dc6cb0aac5eda55706802b3f2f6924
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=greatest+integer+function+worksheet PDF link annotation
    • https://finuvowevemez.weebly.com/uploads/1/3/5/3/135397693/b31cdb.pdfIn PDF document text
    • http://natgood.space/15529173321h89p0.pdfIn PDF document text
    • https://gofolepoxi.weebly.com/uploads/1/3/4/8/134882907/863c3f2110a8.pdfIn PDF document text
    • https://pimetukuke.weebly.com/uploads/1/3/4/0/134017259/tobedejituro_sigexolibi.pdfIn PDF document text
    • https://surupipenip.weebly.com/uploads/1/3/1/8/131856971/8ccbca145.pdfIn PDF document text
    • https://zanolidades.weebly.com/uploads/1/3/2/6/132695759/4af74ce.pdfIn PDF document text
    • http://localdesign.me/mavegiri7bs11.pdfIn PDF document text
    • https://cdn.sqhk.co/tovipovo/dCdBgjj/hello_chat_status_download_video.pdfIn PDF document text
    • https://cdn.sqhk.co/nuroteditu/7icXgYo/playroom_ideas_for_baby_boy.pdfIn PDF document text
    • https://nusewumu.weebly.com/uploads/1/3/2/7/132740482/05dd93.pdfIn PDF document text
    • https://vatewiwep.weebly.com/uploads/1/3/4/4/134482367/wurato_tamisikev_vujoz.pdfIn PDF document text
    • https://viduxetejogat.weebly.com/uploads/1/3/4/6/134600114/wunigigowipuga.pdfIn PDF document text
    • https://sepiximefajo.weebly.com/uploads/1/3/4/8/134849953/jewefomivolexo.pdfIn PDF document text
    • https://tigidejuremu.weebly.com/uploads/1/3/4/5/134502839/b44e4774cff.pdfIn PDF document text
    • https://cdn.sqhk.co/wazofovam/dm0RgiX/space_engineers_survival_kit_not_refining.pdfIn PDF document text
    • http://winclean-sale.shop/44061493020vfxaw.pdfIn PDF document text
    • http://sallehq.xyz/6275999019040ije.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/jepavilutabilel/jomawet.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_off0000e20b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE20B 5296 bytes
SHA-256: 710705996bfebd45053079df8fe8b337f0d2f9448ac15ec76d4605ab0e24c414
font_01_sfnt_off0000f424.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF424 9756 bytes
SHA-256: cc5d7c4e591d41fabbfa8b91dadfb22d09fa0e067139af481bdbcf2de60f73b8

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