Malicious PDF — malware analysis report

Static analysis result for SHA-256 c007914814471d49…

MALICIOUS

PDF

40.5 KB Created: 2020-08-14 01:26:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f8d786cee906911272b967a91a15ce00 SHA-1: ae293e76478fdbb2abf586d33a9ec00c1de35cfa SHA-256: c007914814471d49ac99e76c5ecb464bb1874e7f64a1ecb66e26b17ba02688e7
194 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, designed to redirect users to malicious infrastructure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=backlog+certificate+format+ptu. The document body, though heavily obfuscated, contains references to this URL and other Shopify-hosted PDF files, suggesting a lure to a malicious site disguised as a certificate format.

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=backlog+certificate+format+ptu In PDF document text
    • http://files.gsdfoundation.org/uploads/1/3/1/4/131482821/b4c90961709.pdfIn PDF document text
    • http://files.newmarlboroughfiber.org/uploads/1/3/1/4/131407823/1087036.pdfIn PDF document text
    • http://files.edessa.ca/uploads/1/3/0/7/130775446/7677ba30cc.pdfIn PDF document text
    • http://vesuloxab.scoffonilab.com/uploads/1/3/0/7/130738824/4959155.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/1/0434/7287/9782/files/remy_zero_save_my.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9003/5366/files/84829248727.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2192/4514/files/patofisiologi_asbestosis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4741/1096/files/lujoxozosatulosugewodaman.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2821/0086/files/all_saints_tv_show.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7818/0259/files/indiana_tax_exempt_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5802/1027/files/rowaxugos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5157/3657/files/ropusijopibuwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4090/6135/files/asking_alexandria_moving_on_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9979/0243/files/popanixevupotijuvifufaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9767/0303/files/87104558672.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 2

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_off0000604d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x604D 5268 bytes
SHA-256: 41d2d62df55d86bbca8076a33a345840f296a3897be4f51a0230b17d35e83b8f
font_01_sfnt_off00007227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7227 10292 bytes
SHA-256: ffaca2c9c64fc19b9115cbc4a028553de46b78ff3463d10fcc0b84723142ce6a

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