Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a39f0d3dc83b1d7…

MALICIOUS

PDF

55.1 KB Created: 2020-07-31 21:22:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c0e15d34a65b6c0df4afb034e43041d2 SHA-1: 300757d79e7650da496bc9b0b10d9b8476b3a51c SHA-256: 7a39f0d3dc83b1d701305cff3c385845ac0b11004289156e6b5d3c4d725f3b36
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) which is flagged as malicious. The document body and embedded links suggest a lure to download further content, likely malicious, under the guise of a PDF utility. The presence of a malicious redirector and a large number of external links indicates a phishing or content-luring campaign.

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=combine+pdf+in+preview In PDF document text
    • http://files.greenhousethinktank.org/uploads/1/3/1/4/131407857/biwonarolok.pdfIn PDF document text
    • http://files.ncam.ac.nz/uploads/1/3/0/7/130776788/a94fe6a1c2f25a.pdfIn PDF document text
    • http://files.inspirelove.net/uploads/1/3/1/4/131453399/0b09b68ceea081d.pdfIn PDF document text
    • http://files.mumbisdesigns.com/uploads/1/3/2/6/132695692/nejavareligaxolu.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/1/0433/0687/7080/files/bokowolexom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7824/4765/files/mekokep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1092/3423/files/2776615647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/18695412901.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3340/2266/files/pojujigopasozudamafusavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4288/2215/files/buzonezamagitolisageris.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3532/0735/files/wuxilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3549/2503/files/lubarosonoxanuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0609/9605/files/jidezavotuzarevat.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006380.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6380 7196 bytes
SHA-256: 63783481456585b3cf006dd71aeda1989b9e91fbaa0208fdc753617caad80acd
font_01_sfnt_off00007c10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C10 4964 bytes
SHA-256: dc4a93287ba09b79ac0b1736447da38f3bea43d11124eb269d0be9b8b73eb6ce
font_02_sfnt_off00008ced.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CED 14620 bytes
SHA-256: b2385a890b8570a12e69788d03925180d6ae77d4ec026fe63c4e05ebef3bd80b
font_03_sfnt_off0000ba83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA83 16080 bytes
SHA-256: 62586954845d9ad04bf5f6380249af1aca40386ab0983cb4f2a60b3b2fff5631

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