Malicious PDF — malware analysis report

Static analysis result for SHA-256 32588eb2906320ec…

MALICIOUS

PDF

71.3 KB Created: 2021-02-14 07:47:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: bd8e192ca9d8ac2a5e92505384d0f7e3 SHA-1: 8ecb106cbfa63f8dba92716e81b24f1ab0570b9f SHA-256: 32588eb2906320ec314fe6039a48d137baa9266407efc7e97d918402cc1702f7
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://leonvi.ru/wix?keyword=onlinebootstore.com+retail+store PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4427300/normal_5fcfa5af058d1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495860/normal_5ff33a5cd54d9.pdfIn PDF document text
    • https://morogixifidogaj.weebly.com/uploads/1/3/4/4/134497599/figevobinuxuwokux.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480749/normal_5fc59eb4bd263.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408853/normal_5fcac8b2c8e24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444644/normal_5fe94f67be2c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369776/normal_5fd894b3dccae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366313/normal_5fcdd62d33bb3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461484/normal_600579ce5b1c4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367301/normal_600285db23037.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452171/normal_5ff5289d8746c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471985/normal_6021c2dc2106a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/divelikubapiwaj/puwuxipudusu.pdfIn PDF document text
    • https://s3.amazonaws.com/suzujewa/textbook_inventory_holt_biology_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kobivimelelo/bosezagisegaxegerot.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFA0 4932 bytes
SHA-256: 0143e11affef614c7afe29fa5dedc2ec78c57dc3ae21a29c27b5602a47c92c0f
font_01_sfnt_off0000e03f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE03F 9920 bytes
SHA-256: 74003c4e3c8746cdbfc77a5c7a56c4847b11ee403e010f59cc5f1635824628df
font_02_sfnt_off00010235.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10235 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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