Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a0eafb5ecd54dcf…

MALICIOUS

PDF

38.8 KB Created: 2020-08-19 08:59:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d4634e1376d6caf72e55e22d6a3f43ee SHA-1: fc16fc7f77fbd61ee02ec3fa223cbd5c4c0e2e02 SHA-256: 1a0eafb5ecd54dcf950cf710a5fa7405628546ec3b313bbdd3e0b2b7ff51eb40
194 Risk Score

Malware Insights

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

The PDF document contains a link farm designed to appear as a collection of riddles, but the primary embedded URL, https://ttraff.com/pify?keyword=hilarious+riddles+for+adults+with+answers, is a known malicious redirector. The document's structure and embedded links suggest a social engineering tactic to drive traffic to malicious infrastructure. No scripts were extracted, limiting the analysis of direct payload execution.

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=hilarious+riddles+for+adults+with+answers In PDF document text
    • http://files.diamondbackcombatives.com/uploads/1/3/1/4/131454523/5842649a1a067b.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/1/0438/3296/7318/files/46813704916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2045/1997/files/96192411099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2399/6840/files/jowegemorixoluvisuxogurol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2920/7957/files/morphology_and_taxonomy_of_fungi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2329/2840/files/nilexoferewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/22942865207.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/7334/0320/files/9018097137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7867/1783/files/anemia_megaloblastica_epidemiologia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7541/9798/files/pupunigawipo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2431/7607/files/burogesigopeladiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2712/8735/files/brawlhalla_cross_platform_switch.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 3

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_off00005a0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A0D 5048 bytes
SHA-256: 55f2da3eda0cc9a39c6d57154433d25a2edde2b94b2d9c649f0fd922e113ccf2
font_01_sfnt_off00006b37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B37 10412 bytes
SHA-256: 923982a5707a107d3b18d31f2de2ed5f47d55d49235e47405b043123ebae427d

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