Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed2455c762704b81…

MALICIOUS

PDF

41.1 KB Created: 2020-08-04 16:33:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 788e690a8332fe144a763f02b2b90d42 SHA-1: 23fd26ec2b6e70c5828c0f8bf1e06b510e3ba40b SHA-256: ed2455c762704b81cae2d0320b7f6420986084ecef80c8cc76d13e07437cd3a3
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.ru. This suggests a link farm or SEO poisoning tactic to distribute malicious content. The document body, though heavily corrupted, contains the URL that triggered the malicious redirector heuristic, indicating a lure to a potentially harmful site.

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=pricing+and+positioning+strategy+pdf
    • http://files.madmaxuk.com/uploads/1/3/2/6/132682627/zizidulok-tejibof.pdf
    • http://files.raquelharrington.com/uploads/1/3/1/8/131856186/siwipevonuvasagor.pdf
    • http://wuzax.westerndubuquefootball.com/uploads/1/3/1/3/131384771/49949.pdf
    • https://cdn.shopify.com/s/files/1/0432/0277/3156/files/pegozutimizivareve.pdf
    • https://cdn.shopify.com/s/files/1/0429/3450/1535/files/66081908530.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84312174386.pdf
    • https://cdn.shopify.com/s/files/1/0437/1464/2069/files/87239785157.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/ferakajewomunivizilebet.pdf
    • https://cdn.shopify.com/s/files/1/0444/4015/8374/files/cub_cadet_ltx_1050_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/1667/4713/files/what_is_syntax_in_programming.pdf
    • https://cdn.shopify.com/s/files/1/0439/4477/1739/files/civic_engagement_essay.pdf
    • https://cdn.shopify.com/s/files/1/0431/5345/7320/files/jipukoxesamovot.pdf
    • https://cdn.shopify.com/s/files/1/0434/8333/2772/files/95111599879.pdf
    • https://cdn.shopify.com/s/files/1/0432/3105/1931/files/kipazib.pdf
    • https://cdn.shopify.com/s/files/1/0432/9570/3204/files/zapunox.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_off00006260.bin
bfecd38175ab40e601ba7bdb4a8baa59cd38652480a3ea420c4a2dee25603c4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6260 5392 bytes
font_01_sfnt_off000074d1.bin
474bfff90936479952e3264d05a285072aab912d43d0ae04178e1467a943b6f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74D1 10244 bytes

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