Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e672fe9cda869ff…

MALICIOUS

PDF

67.2 KB Created: 2020-11-27 20:48:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: b601fabdbaeaf6ee77b0df28f35cd89a SHA-1: 6ba71ab35c301dba000a8739eb9ee299aff6df30 SHA-256: 1e672fe9cda869ff5e93802c3370bf6176e891abf7c6e643c27510dbe4ce30db
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffking.ru/strik?utm_term=random+bible+chapter PDF link annotation
    • https://meboguvogo.weebly.com/uploads/1/3/1/4/131437667/e10205131.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374715/normal_5f98969b7db06.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366406/normal_5f94165870fe8.pdfIn PDF document text
    • https://luxofivova.weebly.com/uploads/1/3/4/7/134745836/dikuxijedemezexivoj.pdfIn PDF document text
    • https://remewizefo.weebly.com/uploads/1/3/1/8/131856163/bugege_soxowi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501479/normal_5fae4c9cab7e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416921/normal_5fae13c9a3a52.pdfIn PDF document text
    • https://xezefamije.weebly.com/uploads/1/3/4/3/134352880/ce6d1438.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/93ead7a3-ac6e-4f5d-8eb9-7d4d9fcaf83f/rafujo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49f971f3-7a59-446b-b6a2-bca9d8a8587f/vixen.pdfIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/51532519559.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/515aaae6-ff5a-403e-8fc4-ea6efa23021c/lead_scrap_price_per_pound.pdfIn PDF document text
    • https://s3.amazonaws.com/lolijexejomak/46035826647.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1f14cba-d00c-4be8-acb9-cca2a68abaf9/92413055260.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_off0000c9d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9D0 5280 bytes
SHA-256: 46db403dadd4ba1ea4717627c9af6e6ab912ab979e4ba5070260df89f64fc6a7
font_01_sfnt_off0000db99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB99 10868 bytes
SHA-256: c9a5b6167c3f51aee4ae20af875fda9dc66d353c350ed0753bc3b28bacc4707c

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