Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e47ccec99c20eb4…

MALICIOUS

PDF

62.4 KB Created: 2020-11-25 19:45:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: edb189b377684cc2826ec79a73cf6b82 SHA-1: 31f4604dd7d812aa214f97230fe224eababa5b29 SHA-256: 0e47ccec99c20eb44313a5bcd594cdb9636ec0cc3df4313bef0b5ff6f3733649
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. One prominent URL, 'https://traffine.ru/strik?utm_term=the+eternal+palace+we+can+make+it+stronger+youtube', and another from the link farm, 'https://vevorusafe.weebly.com/uploads/1/3/4/5/134516648/suxutasof.pdf', are flagged as suspicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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://traffine.ru/strik?utm_term=the+eternal+palace+we+can+make+it+stronger+youtube PDF link annotation
    • https://vevorusafe.weebly.com/uploads/1/3/4/5/134516648/suxutasof.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393502/normal_5f92676a8975d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388065/normal_5fb48a6ef12a4.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/wotareropajewub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366659/normal_5f8f8b659786f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393900/normal_5f8f6f427da5c.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/vavabi/words_starting_yi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19817f9e-a818-49bf-bd7f-b14a27996a76/godamowil.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/82634078890.pdfIn PDF document text
    • https://s3.amazonaws.com/xetasif/gelovunapuvubafotademot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf83729a-2853-4479-bcc3-ef8ea63aa28f/20279734793.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27d53c99-4e12-4ee7-8286-9fae4d1e5994/maytag_oven_heating_element_location.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef17d538-19bc-44e1-a63f-18a75b50ca7b/16994813409.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/38498458786.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_off0000b3a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3A8 5692 bytes
SHA-256: fdf5b38b7369802c9c3ba65e940535e69fabd2a7a2e581e8023268dc5760b545
font_01_sfnt_off0000c6ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6EC 11080 bytes
SHA-256: 6ca980a6366fe085ee05bd3bcf4990820910210d14b82c66c0f2e496daa78b5b

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