Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e04150abaefee19…

MALICIOUS

PDF

42.0 KB Created: 2020-08-03 07:14:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4bda5337f14ac2e2e255d3748a8b1ab3 SHA-1: f65402d6e282027dfd9c753023a6669a9001a492 SHA-256: 5e04150abaefee191edc81cd4d71ad7297ebd4b74dd794ba6044fd8d6c4c4468
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.com) which is flagged as malicious. The document body, though heavily obfuscated, contains text related to functions and shifts, suggesting a lure to disguise the malicious links. The presence of many external PDF links, some benign and some unknown, indicates a link farm strategy. The ML classifier also strongly flagged this PDF as malicious.

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/wb?keyword=vertical%20and%20horizontal%20shifts%20of%20functions%20worksheet In PDF document text
    • http://files.virginiarlca.org/uploads/1/3/0/7/130739570/1951985.pdfIn PDF document text
    • http://files.cvsmusic.com/uploads/1/3/2/6/132681559/sewiwazis.pdfIn PDF document text
    • http://files.vvphotography.ca/uploads/1/3/2/6/132683088/12ab9b6a.pdfIn PDF document text
    • http://files.banhmibites.com/uploads/1/3/1/1/131164236/tebivetezodedup_kigijigaxajido_wuvubojoka.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/1/0432/0083/9842/files/64782677915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5523/4710/files/kodijapez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2732/3301/files/lifelopozuvasizagotusanim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5089/2454/files/solidworks_tutorials.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/meragavafeduxilaxopuxaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2333/4565/files/windows_7_repair_disk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0224/7838/files/35604305012.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5417/7185/files/dokepekisuzipijapifilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7898/4614/files/lusasenosonulozufogizetim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3021/6855/files/zizaboweletatixopuxewebum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3733/5464/files/vinezinefikobisi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3802/1544/files/33828551163.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 8

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_off000066f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66F1 5280 bytes
SHA-256: 80143361533b1c6b58cf446e2f6d17f78cb7d3fe51993e846cdfb6f836943800
font_01_sfnt_off000078fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78FD 9944 bytes
SHA-256: 73202e788e7f7eec0313598e887adb5eabbd16be0da8b4c7e21f49a0dbf1638f

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