Malicious PDF — malware analysis report

Static analysis result for SHA-256 4131997e0c8f58dc…

MALICIOUS

PDF

37.9 KB Created: 2020-08-09 11:30:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4be8c8e0fc649e15d5397e3a78e204da SHA-1: 9e3b8b1e8781d3b646c7acc48f44f33e8262a7bc SHA-256: 4131997e0c8f58dc8eee70e83b2c6d008a803357e372858e16b7b7761877b74a
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=7.+s%25C4%25B1n%25C4%25B1f+sosyal+bilgiler+test+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links to shopify.com domains, suggesting a potential SEO spam or content redirection campaign. No scripts were extracted from this sample.

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=7.+s%25C4%25B1n%25C4%25B1f+sosyal+bilgiler+test+pdf
    • http://files.currockpress.com/uploads/1/3/0/7/130739824/9453603.pdf
    • http://files.devinmgill.com/uploads/1/3/2/7/132740553/999ca546.pdf
    • http://giniwela.naturaltherapiesbyelizabeth.com/uploads/1/3/0/7/130738732/6406976.pdf
    • https://cdn.shopify.com/s/files/1/0437/4259/3189/files/mewugasa.pdf
    • https://cdn.shopify.com/s/files/1/0431/7796/7778/files/vajiruretajiwokezizaxe.pdf
    • https://cdn.shopify.com/s/files/1/0429/9233/7059/files/digexidisaribavomax.pdf
    • https://cdn.shopify.com/s/files/1/0428/7247/1718/files/dazaxodaforix.pdf
    • https://cdn.shopify.com/s/files/1/0436/3635/9326/files/63889363238.pdf
    • https://cdn.shopify.com/s/files/1/0434/7458/3702/files/26447926545.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/78012776353.pdf
    • https://cdn.shopify.com/s/files/1/0434/3319/7718/files/foxinigakipera.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/medarovadujagowurevasote.pdf
    • https://cdn.shopify.com/s/files/1/0431/0633/6925/files/wuzifaf.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_off00004841.bin
76be813d84efd8b1c8ec4fd12b47e1668ceb74162e097b39cf19238524a00b90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4841 5288 bytes
font_01_sfnt_off00005a4a.bin
2edd7f5b867029339bdac7171ea81157845bd3a03e32fd7bc9f0194894f4eef1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A4A 10200 bytes
font_02_sfnt_off00007abc.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ABC 4324 bytes

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