Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfb12f9ec7c16d94…

MALICIOUS

PDF

53.1 KB Created: 2020-09-02 22:22:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 565723fe9794e1a6bda7c005fa929737 SHA-1: a81c000369c1387fbbba0e7cdbcc84a7055e1754 SHA-256: cfb12f9ec7c16d94d55759a5efd6abca656d399addc3873426ed220d2cc54601
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary heuristic indicates a malicious redirector link to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the intended destination. No scripts were extracted, but the PDF structure and embedded links strongly suggest a malicious redirection attempt.

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/wix?keyword=diy+platform+bed+with+storage+drawers
    • https://cdn.shopify.com/s/files/1/0444/2321/7318/files/63805746547.pdf
    • https://cdn.shopify.com/s/files/1/0431/7950/7880/files/luturubelejafotixiwuze.pdf
    • https://cdn.shopify.com/s/files/1/0430/4519/1841/files/emotional_intelligence_assessment.pdf
    • https://cdn.shopify.com/s/files/1/0433/9145/1294/files/expedition_to_the_barrier_peaks_5e_p.pdf
    • https://cdn.shopify.com/s/files/1/0463/0868/8034/files/barbituric_acid_synthesis.pdf
    • https://cdn.shopify.com/s/files/1/0430/6383/6834/files/check_symbol_in_excel_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0440/4235/4853/files/fenonadomumigode.pdf
    • https://cdn.shopify.com/s/files/1/0431/3461/5708/files/beniludurorofovaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/6112/5015/files/datuvowuruxalesixuja.pdf
    • https://cdn.shopify.com/s/files/1/0439/1275/7400/files/dorovigikawifiwubetafa.pdf
    • https://cdn.shopify.com/s/files/1/0429/5350/6969/files/kemifamik.pdf
    • https://static.usrfiles.com/ugd/66c878_58d0494141ce45119e8e18492271eed6.pdf
    • https://static.usrfiles.com/ugd/e5412a_d39ddc6e140f4a71a9c8f836803dab5f.pdf
    • https://static.usrfiles.com/ugd/4dd980_a51618dc945d46c99423f161bc9f0fc7.pdf
    • https://static.usrfiles.com/ugd/7603ae_f101b5c428d44933aa8e9cf292127acb.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000078ed.bin
2ad756deb13f82bea436f2dc8c5329a9796c3d369c8ac0ee4c694ff64e258e76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78ED 5788 bytes
font_01_sfnt_off00008c96.bin
60e6f369eba9de2640fa6683c390b8136c3194e1a1a9fe69f5d346a3c798afdb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C96 10176 bytes
font_02_sfnt_off0000afb4.bin
e5458d7b6d82539349b17fc4713a17e1381d471255c72d9f8116b7c86e08c443		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFB4 16168 bytes

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