Malicious PDF — malware analysis report

Static analysis result for SHA-256 960589fc4443bdd3…

MALICIOUS

PDF

32.5 KB Created: 2020-08-24 16:27:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb67abc513a0e595f44e50989345ec60 SHA-1: 43d5f939f85011717fe6f54f66f3e79bfae18c8e SHA-256: 960589fc4443bdd381864805f0b85cbd7002f941b1afb76b0f98ac7c747d2f28
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the critical PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The primary malicious URL is https://ttraff.ru/pify?keyword=adverse+event+reporting+policy, which is likely part of a phishing or scam campaign. The document body, though heavily obfuscated, contains references to the same malicious URL and numerous other PDF links, reinforcing the link farm and redirector attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=adverse+event+reporting+policy
    • http://files.adyartcenter.com/uploads/1/3/2/6/132681969/pafedani.pdf
    • http://borunap.sundanceengland.com/uploads/1/3/2/6/132695829/df288c058a8.pdf
    • http://judojaz.nicole-phillips.com/uploads/1/3/1/4/131437626/d79fcdf54f.pdf
    • http://xirel.lutheranvanguard.org/uploads/1/3/1/4/131453022/lixeresidelekupijod.pdf
    • https://cdn.shopify.com/s/files/1/0460/3143/7983/files/bopepo.pdf
    • https://cdn.shopify.com/s/files/1/0429/1995/2550/files/rifefodasigubev.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9423/files/fundamentals_of_robotics_engineering.pdf
    • https://cdn.shopify.com/s/files/1/0436/3590/0569/files/57317965436.pdf
    • https://cdn.shopify.com/s/files/1/0432/5618/5000/files/85231183625.pdf
    • https://cdn.shopify.com/s/files/1/0428/7175/0823/files/mojulexajewepozukejijife.pdf
    • https://cdn.shopify.com/s/files/1/0437/7929/3338/files/42975021354.pdf
    • https://cdn.shopify.com/s/files/1/0429/0609/1687/files/90013454954.pdf
    • https://cdn.shopify.com/s/files/1/0431/8222/7617/files/91660855435.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000412e.bin
877f65a8ab3b85c421eb0600c18950b8873b83d0e3204a3dd60850b32f7e38fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x412E 5180 bytes
font_01_sfnt_off000052e9.bin
1116cb1c1045197ce571fa3011de517115ae1a66204db29fa7d847ee7c261284		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52E9 10164 bytes

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