Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea129fd7f88f8cce…

MALICIOUS

PDF

40.2 KB Created: 2020-08-11 16:45:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ba5ac9d45257a8e0af5f7d96cf5f8daf SHA-1: 034ee08dc18fee3a78677cecfff0ab0f4c1db91e SHA-256: ea129fd7f88f8cce64bf681682f4e105c5f4a8d22b828555bfc44a24ca1d36a0
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, a technique often used for SEO poisoning or to redirect users to malicious sites. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags a link to ttraff.ru, indicating malicious redirector infrastructure. The ML classifier also strongly suggests maliciousness. The document body, though heavily obfuscated, contains the same URL and keywords, reinforcing the lure.

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.ru/pify?keyword=the+nielsen+total+audience+report+q2+2020+pdf In PDF document text
    • http://files.farrellheating.com/uploads/1/3/1/6/131606150/pizuxuberoximok.pdfIn PDF document text
    • http://fobemik.marcmcafee.com/uploads/1/3/1/4/131406982/dusalumidifasenejol.pdfIn PDF document text
    • http://vafino.energysmartacademy.com/uploads/1/3/1/6/131606289/5367324.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/1/0428/4809/2323/files/90010168966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1608/3877/files/verbal_ability_tutorialspoint.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4183/3635/files/63503140726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5405/6092/files/pibogogorarimufepenev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1071/1971/files/20780358555.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0273/9362/files/lelof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0890/0768/files/mevesifonizofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0757/4179/files/63602404696.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4112/0679/files/34457051096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/99203043279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9403/2040/files/ritezofonapewulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/19203297242.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6980/8548/files/wobomumaremusolafe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0935/9520/files/punjab_1984_full_movie.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
🗂 Part of campaign: adcoblue.com 6 samples

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_off00005cfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CFC 5592 bytes
SHA-256: cd73fdee93c23bb0a80cb40f1fe716dfa1c645d0a263cc78ccbd42b0daf5fb17
font_01_sfnt_off00006ff6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF6 10576 bytes
SHA-256: fa7e7aa095b30b3e6b24a2f0239844f185d0f1c0d6adb98fe7b0de35157f48ae

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