Malicious PDF — malware analysis report

Static analysis result for SHA-256 383d197ce91e5b42…

MALICIOUS

PDF

50.2 KB Created: 2020-08-02 18:18:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4050a1dd503317ac84427555cc468701 SHA-1: 4d50ab94bf506a8bb94b5362be32f96001793ad1 SHA-256: 383d197ce91e5b42c38f8ea1df79c10728e9b3f857bb6b7b48c902d618077ff1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a large number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.cc/pify?keyword=cohen+tannoudji+quantum+mechanics+pdf', redirects to a known malicious domain, indicating a phishing or malware distribution attempt. The document body itself is heavily obfuscated and contains what appears to be a reconstructed URL, further supporting the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.cc/pify?keyword=cohen+tannoudji+quantum+mechanics+pdf In PDF document text
    • http://files.stevelevinsonphotography.com/uploads/1/3/0/9/130969551/lazilejukota-xoveniwekevo-wozim.pdfIn PDF document text
    • http://files.tiararoxanne.com/uploads/1/3/1/3/131379712/numagitukoji.pdfIn PDF document text
    • http://files.sumikoshimada.com/uploads/1/3/2/6/132682989/e2f26fcf505db4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8547/0627/files/43454557745.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2808/5912/files/71870090758.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/lizosimokevakobufab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9611/2294/files/vupasoxatimuxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5633/9871/files/xaxuneze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/befuxaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6678/4932/files/pifipotumaviwilikawoxare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5433/3093/files/20887713023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3074/8072/files/48183034156.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 6

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
stream_005_off000091ca.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x91CA 23704 bytes
SHA-256: 9dc9aa39f189d583fd859df7472b4e9a40367401df4606a10d6f138a5d81f50e
font_00_sfnt_off00005c29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C29 5372 bytes
SHA-256: e8c3ef025d7d0d495a41392fc4a459b46f3518487f2294b8fc63ce07bbc41b5b
font_01_sfnt_off00006e50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E50 10552 bytes
SHA-256: 274d4032c8fe27d6e55168e78804abb1f7fe3cf027d9742b5e22f32faec523cf

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