Malicious PDF — malware analysis report

Static analysis result for SHA-256 887636734d2ce8b2…

MALICIOUS

PDF

40.1 KB Created: 2020-08-09 22:51:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6dbaeecd7eddbc07a7f2e4707507b691 SHA-1: abdafbe63741b641cfba1fa9b8ecfdb0ba943a1a SHA-256: 887636734d2ce8b2701c1819b1c86d7a197ac4f4f1a39f14e2a2e971c1af1883
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm with 28 external links, many of which point to SEO-optimized Shopify URLs. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains references to the redirector URL and other Shopify links, suggesting a phishing or scam lure.

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=marvel+characters+drawing+pdf In PDF document text
    • http://files.staticcomputations.com/uploads/1/3/1/0/131070362/a5337ce00.pdfIn PDF document text
    • http://files.cuppagusto.com/uploads/1/3/2/6/132683111/dekejaj.pdfIn PDF document text
    • http://files.wallingtonanimalrescue.com/uploads/1/3/1/1/131164556/5388895.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/1/0430/8277/6729/files/xupuzutumixevidelaxenazos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8288/4006/files/visuvafatule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9240/1573/files/wolf_oven_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/robavapatukemekusoso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0627/1394/files/payroll_management_system_database_project.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3159/3113/files/60253290034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8250/6647/files/sokajozuriletububijomi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5664/3739/files/55713192732.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/59854739703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5385/0524/files/14733278361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6915/2163/files/bodyweight_muscle_building_program.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 5

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_off00005f41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F41 5576 bytes
SHA-256: a714f69e72b788601b8707f87c0298ebb0c1797b499b09aae8264bb167c48d1a
font_01_sfnt_off00007254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7254 9736 bytes
SHA-256: 97f9cf2c9ac858fb45b85bc12bee5b86f1a998c15a0f7a4b29ae221f0c856a5d

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