Malicious PDF — malware analysis report

Static analysis result for SHA-256 a60e081fc97e4476…

MALICIOUS

PDF

66.8 KB Created: 2020-11-11 05:43:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b40a3cf0c5b7964e40cac74a28276348 SHA-1: 95a752aa73dce533a5a0bd6cd2de0c1bab213eba SHA-256: a60e081fc97e4476aab16639868c4bdf099e1b7bd998a2dd6136bddd9be90a04
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://traffnew.ru/strik?keyword=graphic+design+contract+example PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4401505/normal_5f9ae2b362b7a.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/806e5b81-1ada-45fd-9b60-d212e1f736e9/everyday_use_questions_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06014325-5168-453f-91c7-76396227522d/78903987834.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/96296249383.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b38332b1-44ba-407e-b9d0-17dab3223891/words_start_po.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/819d48d6-b310-4bbe-abe0-57f2981079b6/83604814986.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/toluwapi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6318d909-770e-462c-abf9-1e14f63b240e/51677649221.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af2ec527-e7a2-4fe4-bf43-41c1f3a9bbd3/gisofatav.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_off0000c9bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9BD 5584 bytes
SHA-256: 163416f721470434158466b32a1b6881ff7638c79356c1df8c94fd3a02f84921
font_01_sfnt_off0000dc91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC91 10068 bytes
SHA-256: 9450e8a03a7430832a36a6be8386c6472588ee97ad166864a9bf5eabdf4611d5