Malicious PDF — malware analysis report

Static analysis result for SHA-256 719fb8a7da4279fd…

MALICIOUS

PDF

59.4 KB Created: 2020-08-24 04:55:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 41f3815271b1faa987070c9ea08249b2 SHA-1: 28c06ad6c4aea4bb2b6bbe9ce3ba8ebd46d1f036 SHA-256: 719fb8a7da4279fd4799f7cfe3beacab1b266adedd925ce8f4b71818212d965f
194 Risk Score

Malware Insights

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

The PDF contains embedded links pointing to a known malicious redirector, ttraff.ru, which is used to obscure the final destination. The document body, though heavily obfuscated, contains the same URL, suggesting an intent to drive traffic to malicious infrastructure. The presence of multiple PDF links to external sites, some of which are benign Shopify links, indicates a link farm strategy to potentially improve SEO for malicious content or to host further payloads.

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=broaching+machine+pdf In PDF document text
    • http://nukora.muhammadak5514.greatwebsitebuilder.com/uploads/1/3/1/1/131164250/ruvuz.pdfIn PDF document text
    • http://files.fightnightblog.com/uploads/1/3/1/3/131382470/xejusovipokubiweri.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/1/0430/7202/8833/files/gahanna_police_department_reports.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0044/7655/files/73491780977.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8379/2533/files/2931653338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1376/6296/files/24887031752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7122/6534/files/frc_safety_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6976/files/24790114572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7879/4917/files/beth_moore_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4673/9878/files/99031317560.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0108/5082/files/adelaide_showbag_guide_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2675/1389/files/kizobodapiso.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_off0000947c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x947C 5408 bytes
SHA-256: 259df8b14303c4cc90f30f7f93dcc36474cb90b50a5e10876ee88ded65be1f8c
font_01_sfnt_off0000a6ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6AB 10664 bytes
SHA-256: 6c80730bf03f025b997cd6b2fec236023a13a1b6ff63fc42603ee7f1e4ff6bb6
font_02_sfnt_off0000cb45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB45 16168 bytes
SHA-256: 13596defb2bcc6fc1048af8e1a4b019015f57a35384aba88f9e1637b8f94b635

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