Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe56bcea4dfe0b29…

MALICIOUS

PDF

67.0 KB Created: 2020-11-23 21:23:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: dbcafef06a22e8dce51a493fd57f1048 SHA-1: d6d4297e0458e3d16b0957d655ff44bcd6ac2ff3 SHA-256: fe56bcea4dfe0b298b0cee65a2c0f6857c8e7d8d60016b9fd7a2333573fdb1d2
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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://traffset.ru/wb?keyword=michael%20bolton%20music PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374013/normal_5f8ec0eae3f70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385026/normal_5f96cf4ee2400.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378845/normal_5fbb004a398ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381551/normal_5f951b094b05a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367301/normal_5f877773b1f00.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389354/normal_5f93285b1db0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365567/normal_5f86f883ba679.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368469/normal_5f8cb993688b7.pdfIn PDF document text
    • https://dakovogusuzulex.weebly.com/uploads/1/3/4/5/134595229/nivexave_davuzudubob_notikiv.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/bikikanafopavu/19744516615.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf0e195c-b2d3-432e-a72d-c136789fe522/xamedo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fc71e70-63c2-483d-b36c-7c66c3aecc10/zabiberajulodinib.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_off0000cabc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCABC 5088 bytes
SHA-256: d0ee59a9d030a827214ca89c472f63ee591977669534f89080c2dfb50969300f
font_01_sfnt_off0000dbee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBEE 10464 bytes
SHA-256: 127113d298af3fb68cd58f554b3d1ad2baf24eb43daf5b556866649625475752