Malicious PDF — malware analysis report

Static analysis result for SHA-256 7064622928f1de30…

MALICIOUS

PDF

41.3 KB Created: 2020-08-27 15:57:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7da5278f5b372ba73f95cd1921dff5ac SHA-1: 93b50b41db35bb86ec32214de23059627c9cda72 SHA-256: 7064622928f1de30e4b76d7e312be89bd6ebc7c9d61fe615acc7d2ff48ebe6fa
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting PDF files, suggesting a link farm or SEO manipulation tactic. One critical heuristic indicates a link to known malicious redirector infrastructure at 'ttraff.ru'. The document body also contains a reference to this malicious URL, further supporting the malicious intent. No scripts were extracted, but the presence of numerous links and the redirector heuristic strongly suggest a phishing or malicious content delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=good+omens+audiobook+google+drive
    • http://files.jamesmatthewwilson.com/uploads/1/3/1/6/131637057/d1e23bb.pdf
    • http://files.thehealthymusicianproject.com/uploads/1/3/1/1/131164386/5624509.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0439/9998/5822/files/1999_jeep_cherokee_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/4886/9786/files/26661268268.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kulabegidubonigupux.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/acting_career_101.pdf
    • https://cdn.shopify.com/s/files/1/0439/0112/4760/files/87808001911.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/mugoxazikow.pdf
    • https://cdn.shopify.com/s/files/1/0431/2973/3282/files/botalinibej.pdf
    • https://cdn.shopify.com/s/files/1/0432/8023/6702/files/45289416600.pdf
    • https://cdn.shopify.com/s/files/1/0437/1503/5291/files/bugiwusona.pdf
    • https://cdn.shopify.com/s/files/1/0430/4017/8333/files/zonugarajesivok.pdf
    • https://cdn.shopify.com/s/files/1/0431/5326/0701/files/31493015079.pdf
    • https://cdn.shopify.com/s/files/1/0432/4920/5405/files/11418393564.pdf
    • https://cdn.shopify.com/s/files/1/0435/6279/5171/files/ski_report_ellicottville_ny.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006226.bin
37b3348713793d39ae058730d9939f0ebe4e654692e5fd50a6b6927abd7ad8da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6226 5440 bytes
font_01_sfnt_off00007496.bin
39bfc6618726f140e1dd04bdbc669d2d52ddf61f6852e2e173e168d5b3b0900e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7496 10492 bytes

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