Malicious PDF — malware analysis report

Static analysis result for SHA-256 879512d801f02928…

MALICIOUS

PDF

43.0 KB Created: 2020-08-23 21:06:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 99b70ba9f987d881ab8ccac6a705b1eb SHA-1: c2d6b1475380ba3e15cfa9b8e8859822587d7d4d SHA-256: 879512d801f02928f5597839cd0905679dd9b53957cbe0f0fa9dbcd13d8051f7
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious domain, ttraff.com, disguised as a cyclothymia test PDF. This indicates a phishing or scam attempt, likely delivered as a spearphishing attachment. The ML classifier strongly supports the malicious verdict.

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.com/pify?keyword=cyclothymia+test+pdf In PDF document text
    • http://files.glasgowchamber.net/uploads/1/3/1/1/131164431/tudifozamilan.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/1/0428/9835/8432/files/texirid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4301/9159/files/57308840927.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1407/6069/files/xizaxojazudozitibov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6340/8795/files/93429375501.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4971/2807/files/lirawibid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2050/9596/files/esxi_embedded_host_client.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3698/2944/files/75732460965.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2942/8384/files/carnivores_dinosaur_hunter_apk_mod_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1033/4620/files/compost_crossword_answer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8916/4440/files/best_free_flyer_psd_templates.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B3F 5304 bytes
SHA-256: 2b96002d1a65fada0c1d1540f36a740316c587fb840d5a308f1b6e1627b21c59
font_01_sfnt_off00007d2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D2B 10068 bytes
SHA-256: 864e22e8f48e50b83a4f92c7ca29d14dfd3ee3db9c80251c97f12a6e3f526041

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