Malicious PDF — malware analysis report

Static analysis result for SHA-256 f11e7b3c0ba60495…

MALICIOUS

PDF

37.9 KB Created: 2020-08-22 21:21:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94b4b23ba19a2867fd5e5e8b4187f986 SHA-1: ff532f2b1394e57e3194b51f5a79d5dec70a6d9a SHA-256: f11e7b3c0ba604958acedf4a8583e150ba9e4235f7d325cb904139300c8eda78
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.ru', which is also present in the document body. The file also exhibits characteristics of a link farm, with numerous embedded URLs, some of which are hosted on potentially suspicious domains. The primary attack vector appears to be social engineering, luring the user to click the malicious link under the guise of a Western Union form.

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=picture+sample+of+a+western+union+form
    • http://nedogapex.trainingmadefair.com/uploads/1/3/0/7/130775388/vipubefutum.pdf
    • http://nibide.bradfordcapitaladvisors.com/uploads/1/3/0/7/130775219/8637629.pdf
    • https://cdn.shopify.com/s/files/1/0430/5348/2138/files/celine_dion_all_by_myself.pdf
    • https://cdn.shopify.com/s/files/1/0446/7235/2419/files/dokigin.pdf
    • https://cdn.shopify.com/s/files/1/0431/7963/8942/files/japedesi.pdf
    • https://cdn.shopify.com/s/files/1/0428/1958/4166/files/12026686794.pdf
    • https://cdn.shopify.com/s/files/1/0434/8130/1158/files/47320188668.pdf
    • https://cdn.shopify.com/s/files/1/0436/3137/8590/files/neritu.pdf
    • https://cdn.shopify.com/s/files/1/0436/3059/2160/files/getilamuxo.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_off000057cc.bin
6b9cc1e7ece15856e04c542174e3cbab6597d01703ecad0186447908a2b8f165		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57CC 5252 bytes
font_01_sfnt_off000069a5.bin
717e066b2e38f79dbe3f3d396590b963d69e4440f7a4c7a7ecdc4b179d1fc20e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69A5 9716 bytes

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