Malicious PDF — malware analysis report

Static analysis result for SHA-256 497c16e939ef5e83…

MALICIOUS

PDF

45.4 KB Created: 2020-09-18 04:48:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b0e5346f8420156729c531acd3dd84a6 SHA-1: 2fb88c3413d41d5aa3d1b368cca5771dae8a6e39 SHA-256: 497c16e939ef5e83db2e36d03878beec4f0fef1040ec68f9da97cc2c0f394979
184 Risk Score

Malware Insights

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

The PDF document was flagged as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'https://ttraff.club/wix?keyword=lifecam+vx-3000+mac'. Another critical heuristic detected a large number of external PDF links, suggesting a link farm designed to manipulate search engine results or distribute malware. The document body contains garbled text and what appears to be metadata, but the primary malicious activity is driven by the embedded links.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.club/wix?keyword=lifecam+vx-3000+mac In PDF document text
    • http://lavul.enriqueseira.com/uploads/1/3/2/6/132682051/vovinulemeten.pdfIn PDF document text
    • http://zamenal.yconnyi.org/uploads/1/3/1/6/131606255/2260012.pdfIn PDF document text
    • http://sagaseneg.dorothyhoeft.com/uploads/1/3/2/7/132740405/murejog.pdfIn PDF document text
    • http://madaxulof.fundacionchelaquintana.com/uploads/1/3/1/4/131407995/8583241.pdfIn PDF document text
    • http://files.nhswomenslacrosse.com/uploads/1/3/1/4/131438418/9473772.pdfIn PDF document text
    • http://files.embroideryequipment.com.au/uploads/1/3/0/7/130739165/bamojoxofokino-turuxuku-ribifezasakiki.pdfIn PDF document text
    • http://bupologu.stretchwithchuen.org/uploads/1/3/1/3/131380429/3404710.pdfIn PDF document text
    • http://dituraku.coconutgrovemassage.com/uploads/1/3/0/7/130776760/319544c75b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c10464c1-3228-4243-8fba-3048f87fdffb.filesusr.com/ugd/007d40_02ef5a77877a4f2ba5cdc8c89fdee713.pdf?index=trueIn PDF document text
    • https://28aaa9f4-55aa-40e7-83c1-00f75a7ef137.filesusr.com/ugd/278743_e2a61382e7ec468c8b105c1190857fd4.pdf?index=trueIn PDF document text
    • https://dc1c645b-b503-4c07-b733-fbefce336ce8.filesusr.com/ugd/f2c1dc_392cb150a5434348b02fbccce90e847c.pdf?index=trueIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off00005d9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D9D 5128 bytes
SHA-256: c85aefb1d87355b28e2821ec3f6f96a1f532ec50fbe84e6b75ced9d09fd8676b
font_01_sfnt_off00006f1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F1D 10668 bytes
SHA-256: 2ff1df7540f18b7a71fbc87b3496b856f1e61d9ae34768b334880f1b222d9d80
font_02_sfnt_off000093c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93C6 16284 bytes
SHA-256: 9e72eb71cec9de0c778457f6415ace9b059829408473d8201bd10fc7b1fb75ca

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