Malicious PDF — malware analysis report

Static analysis result for SHA-256 25580b6e62a0578a…

MALICIOUS

PDF

40.9 KB Created: 2020-08-23 15:25:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1f9d4561d882aa6de9ce0b62113f47cb SHA-1: c7ad3cd5f4517f0dd4e719bcf763635b455ddbd9 SHA-256: 25580b6e62a0578a28b548bda68280268ae3597587df68ae227382337a069822
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged as malicious due to containing a large number of external links, many pointing to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector at ttraff.com. The document body contains obfuscated text and URLs, suggesting an attempt to disguise its malicious nature. The primary attack pattern appears to be SEO manipulation or redirection to malicious sites.

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=classical+music+blogspot%252B+free In PDF document text
    • http://lapisevef.nicolesmacaroons.com/uploads/1/3/1/3/131380505/5346065d2.pdfIn PDF document text
    • http://files.carriagehousecinema.org/uploads/1/3/1/3/131398184/vawog.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/1/0431/1715/0357/files/toxeramojago.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9671/7992/files/xoverazebalege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3915/2536/files/71010859055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2033/2705/files/livros_sobre_liberalismo_economico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3550/8381/files/xikupinulelatasuvotipexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3300/2145/files/tendinitis_aquiliana_ejercicios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2425/9992/files/37177036896.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9788/2773/files/pukoxawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2536/6165/files/b._com_hons_syllabus_mdu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1241/5897/files/18147050107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/5450/9729/files/antonin_artaud_livros.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 7

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_off00006245.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6245 5380 bytes
SHA-256: 529d43f0847ff48eb5be11fcf80285704bee3a4ab362bf3a8675b06eeb6ca567
font_01_sfnt_off00007474.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7474 10096 bytes
SHA-256: de0ca618e7454e018e6a5966cfd6d8bc507d3d0420bf30a3eb2f0bdbe3b1682f

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