Malicious PDF — malware analysis report

Static analysis result for SHA-256 d932f4329527a165…

MALICIOUS

PDF

94.1 KB Created: 2021-01-02 12:19:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 5252bb788463e1cc95c636d9b30a9f1d SHA-1: e0b37a6fde8ba44d08e0f4d69c787326e975548b SHA-256: d932f4329527a165f764bf54ba6663578910e1e0e60a9ecbd939367668138070
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a lure for a 'CV with picture template word free' which redirects to a phishing URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or credential harvesting. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://trafffi.ru/aws?utm_term=cv+with+picture+template+word+free PDF link annotation
    • https://cdn.sqhk.co/bibunifez/jQifOji/viewbug_photography_app.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448115/normal_5fd5ffefdb9d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380536/normal_5fd7bf9c0b1a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458633/normal_5fd78b23e4fcb.pdfIn PDF document text
    • https://cdn.sqhk.co/pakiwujipubi/icyhiS7/lemokom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376625/normal_5f97caad8adca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459467/normal_5fe1162e43d4e.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/rakabexozu/vofijakurakajefowi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4dd25d6-ec49-4af5-bbc7-bc103c7b174f/44315596914.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/643601c5-6332-412f-bc6e-5c7b576baee4/road_to_crisis_on_infinite_earths_part_4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7756dba-0ef8-4722-9374-f0fbe9475259/smash_gamecube_controller_restock.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012715.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12715 5168 bytes
SHA-256: 06e576e34f0133b47209dbdc41ea2472b9f0ef8c0319aad42603fbe921236090
font_01_sfnt_off000138c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138C8 10716 bytes
SHA-256: 07f2641b7d8be282520d7490ca712ae6ea33b09b5f8d51051455f4678a06f536
font_02_sfnt_off00015d3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15D3E 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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