Malicious PDF — malware analysis report

Static analysis result for SHA-256 131d9c7b3a2a7c74…

MALICIOUS

PDF

47.6 KB Created: 2020-08-10 09:06:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 15a34ff333d215e1a38b3595cc2fea4d SHA-1: f2a1b1678ea621cba8f4a7d3765929474046ffa3 SHA-256: 131d9c7b3a2a7c7473c60d250a0f8088644f5f3231a098edc9c5680a48c4217a
194 Risk Score

Malware Insights

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

The PDF contains a deceptive link that redirects to a known malicious URL, ttraff.ru, which is flagged as a redirector for malicious purposes. The document body text and embedded link structure suggest a lure to trick users into clicking the link, likely leading to a phishing page or malware download. The ML classifier strongly supports the malicious verdict.

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=all+articles+of+the+constitution+pdf In PDF document text
    • http://namusig.enonbaptistgilmer.com/uploads/1/3/1/6/131637814/fagovi.pdfIn PDF document text
    • http://files.videoevent.co.uk/uploads/1/3/1/4/131452733/eb9cd4cb81aeaa.pdfIn PDF document text
    • http://files.abbeypsychservices.com/uploads/1/3/1/3/131380045/feniz-zupuwuj-lukatu-taxagomo.pdfIn PDF document text
    • http://files.newportboysnationalschool.ie/uploads/1/3/1/3/131381919/tamot-rufolak-kawazil-zivegajebofow.pdfIn PDF document text
    • http://files.rtwtus.org/uploads/1/3/0/7/130739443/veviw-fedelam.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/32867625585.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3215656586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4929/4756/files/71028824608.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2165/3400/files/tepesuwaxanikerubiketixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6797/2515/files/76994850743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9213/2508/files/tewerosebitamotibum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3080/5671/files/domingo_garcia_belaunde.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8716/7649/files/93446965439.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3728/5797/files/super_metroid_ju_rom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1057/2966/files/526074232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5895/3369/files/todopikodaguguliguza.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 4

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_off00007e56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E56 5232 bytes
SHA-256: 2bc698b51ee9aff83d85f4ef44fca9aa02cedf37243a1a879c015be3a40492c0
font_01_sfnt_off0000901f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x901F 9728 bytes
SHA-256: 652962f3d7a4e084f9b416999cf58fc22e4c201b1508eba84a3336e4b0053c41

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