Malicious PDF — malware analysis report

Static analysis result for SHA-256 67de73e825f5b5ec…

MALICIOUS

PDF

59.2 KB Created: 2020-07-25 20:09:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d0c39de8adc638f19c752de95fbdd044 SHA-1: 7e0eae4506f2e9fc617ed50a9de9a549eaca842c SHA-256: 67de73e825f5b5ecd327884b68d953de9a0c2527ac79ba6804a1facfb2b48119
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it's a malicious redirector, specifically linking to 'ttraff.ru' which is flagged as malicious. It also hosts a large number of external PDF links, many pointing to Shopify, suggesting an attempt to obscure the true destination or engage in SEO manipulation for phishing. 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=ordering+fractions+worksheets+5th+grade In PDF document text
    • http://files.teenagerswithexperience.com/uploads/1/3/2/6/132695741/womog.pdfIn PDF document text
    • http://files.aspengrovepreschool.com/uploads/1/3/1/4/131453943/fagodatug-gikuzupi.pdfIn PDF document text
    • http://files.ohioballroom.com/uploads/1/3/1/6/131637477/jojobuwupagod_zefimimi_fimegeferud.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/1/0436/1479/7981/files/fipamamej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2172/2015/files/botevudasoniwevuwufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9860/3669/files/bijixixewazapirevubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0575/2997/files/32078738517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/99345304494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1979/5623/files/fezezexuzinuviv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7651/8049/files/27475699009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2273/7830/files/diguropazoxununikev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/zinaxizelekulajedidujef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9339/2536/files/marubuvimupo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000967d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x967D 5344 bytes
SHA-256: 6c96ace8ea343a5f48f39372a0cf6cff219542de157cb806b3f7cb2c025dfb43
font_01_sfnt_off0000a8be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8BE 9908 bytes
SHA-256: 1c65ee5a9dbd75a6bdd9ae774fdc1cf1a662eaa3c3bc9bb29fc524db2c56d16d
font_02_sfnt_off0000ca52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA52 16116 bytes
SHA-256: 64e13322576ebe4b9a20b8efdba1cb2c8bc01163a7c4e1ba1f667a2d7cf8e6df

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