Malicious PDF — malware analysis report

Static analysis result for SHA-256 13cd578253b4bb9c…

MALICIOUS

PDF

46.3 KB Created: 2020-09-19 23:36:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 65d7366aac2b1c21a45b9758e169f987 SHA-1: 610ca42d18e682d32c998249ffa024c268219389 SHA-256: 13cd578253b4bb9c21a2342922423f327ef5e986585994fd3b31e22462b5ab93
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to disposable domains and redirector infrastructure, indicating a link farm designed to lure users to malicious sites. The presence of a link to 'ttraff.club' with a keyword suggests a phishing or scam attempt. No scripts were extracted, but the heuristic firings strongly indicate malicious redirection.

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=nioh+return+of+the+gourd+unlock In PDF document text
    • http://files.ottringhamchangingseasons.com/uploads/1/3/1/3/131382595/soganitoniwew_bokosasijirofo_fedisijo_xinudirali.pdfIn PDF document text
    • http://files.livshairandbeauty.com/uploads/1/3/2/6/132681824/3751266.pdfIn PDF document text
    • http://files.stbarnabaslinslade.uk/uploads/1/3/1/3/131384301/1219686.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0ade3b17-2e42-43cd-b5b7-ae23f6fb00ac.filesusr.com/ugd/1c8c6c_64c634355d83466baf4223daf7f70d55.pdf?index=trueIn PDF document text
    • https://a8971108-5f87-4024-bdc7-f9b2c0576aa2.filesusr.com/ugd/7b00a0_db9be8ded69e41049d5038f1be75e8e9.pdf?index=trueIn PDF document text
    • https://a43b2b19-ee3a-4296-ada3-88dff9c4e8a6.filesusr.com/ugd/2813e2_d1f17704d38944bd8160089363eabc46.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7813/2636/files/fujolome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9860/9566/files/metabolismo_cobalamina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5258/8437/files/dewexamojitodugosaxu.pdfIn PDF document text
    • https://2f5545a8-c7bf-4a25-843f-d88b06a5f980.filesusr.com/ugd/221eaa_5f323fd718894659a1c0293379f745ea.pdf?index=trueIn PDF document text
    • https://ff122001-3c8d-4cf3-9af6-328f397b0aa3.filesusr.com/ugd/10b11f_f94caa5c6ff34cf5a0567713859a5467.pdf?index=trueIn PDF document text
    • https://dae81836-6572-4043-809d-1ef50532610d.filesusr.com/ugd/d162e3_99c444ff399648209df8d146f803388d.pdf?index=trueIn PDF document text
    • https://f5d6e764-02ac-414f-aad1-14f21b2ea73e.filesusr.com/ugd/1d3654_c8f7a94840da4bdca2755056a0f7c71d.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
🗂 Part of campaign: livshairandbeauty.com 5 samples

Related samples 6

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D43 4928 bytes
SHA-256: 76c6454e52181e03af8982767afba72ddde73e796f93435281566eaf5ed74d0b
font_01_sfnt_off00007e0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E0C 15240 bytes
SHA-256: da80812aa7e5e3b9a451fe2f08876b8b0f620be3aafd9ed23404093f4402f974

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