Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6d329febe4988d4…

MALICIOUS

PDF

41.1 KB Created: 2020-08-20 12:41:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e1ebea5bf93744cfc0ec8d9a8a35059 SHA-1: d2c9c2a1bcf81a79682a503e9894e2d57e94bcc8 SHA-256: f6d329febe4988d42ef4d3ac17c47aa63fb77432792edf378da822512115694b
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing indicating it's a malicious redirector link, pointing to 'ttraff.com'. The document body and embedded URLs also suggest a lure related to a 'workforce development fund claim form'. The primary malicious URL is 'https://ttraff.com/pify?keyword=workforce+development+fund+claim+form', which is likely used to redirect the user to a further malicious destination. The file also contains a large number of other PDF links, many hosted on Shopify, which is characteristic of SEO link farm abuse.

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.com/pify?keyword=workforce+development+fund+claim+form
    • http://vusezexid.smittysclasses.com/uploads/1/3/2/6/132681947/a13ef9f6c07e84a.pdf
    • http://jovoken.lamplepost.com/uploads/1/3/0/8/130874153/6014823.pdf
    • https://cdn.shopify.com/s/files/1/0430/9306/5877/files/85541538834.pdf
    • https://cdn.shopify.com/s/files/1/0428/7424/1183/files/73598134095.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/61403973964.pdf
    • https://cdn.shopify.com/s/files/1/0432/6758/8252/files/vizorufirupotane.pdf
    • https://cdn.shopify.com/s/files/1/0428/9780/1375/files/joint_commission_international_library_of_measures.pdf
    • https://cdn.shopify.com/s/files/1/0431/4995/1125/files/wow_classic_warrior_talents.pdf
    • https://cdn.shopify.com/s/files/1/0430/9755/5093/files/48497013997.pdf
    • https://cdn.shopify.com/s/files/1/0436/3429/4937/files/gunudunojazazefuzad.pdf
    • https://cdn.shopify.com/s/files/1/0436/9301/5190/files/94829981386.pdf
    • https://cdn.shopify.com/s/files/1/0434/0665/5642/files/palituvimitizesude.pdf
    • https://cdn.shopify.com/s/files/1/0429/2981/5705/files/59443028194.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/alloanamnesis_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0435/9448/1821/files/34408264068.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_off00006152.bin
43823f0d169d1c92bd9a8d4ec489e1a86e765d42cd813a33247d7f5ebdd83b99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6152 5260 bytes
font_01_sfnt_off00007338.bin
ab2b9489a8a2486d1e87ebef95d475990ba4326702fdca569122e3c5f1dbb298		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7338 10920 bytes

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