Malicious PDF — malware analysis report

Static analysis result for SHA-256 c671ee91b1f2769b…

MALICIOUS

PDF

33.8 KB Created: 2020-09-17 12:57:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87c8af3d5b1e5d5d77758d944288d49b SHA-1: 11cbce6cbbf950618d9652734781b52aacbc8a3b SHA-256: c671ee91b1f2769b36f47e06a8e64addda7d89f510244ffdb2abf27fdb1dfe9d
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common technique for redirecting users to malicious websites. One such link, 'https://ttraff.club/wix?keyword=husky+knife+how+to+close', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and other PDF links, reinforcing the attack pattern of a link farm designed to distribute malicious content or phish users.

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.club/wix?keyword=husky+knife+how+to+close
    • http://bojezu.pelicanandpiper.com/uploads/1/3/1/4/131438437/ad596ba81.pdf
    • http://vukuwud.amyward123.com/uploads/1/3/1/0/131071073/fenofuwotene_litun_vifemimomu.pdf
    • http://files.additadvertisingsa.com/uploads/1/3/1/0/131070030/vewowiruke.pdf
    • http://fudoxalop.sapphireimagery.com/uploads/1/3/0/8/130874493/bb7ad019e4918e.pdf
    • http://fodexa.perchancetheatre.com/uploads/1/3/1/3/131384600/a803713e2fb1d8.pdf
    • http://vofekalej.vesselsofcomfortministries.org/uploads/1/3/0/7/130775209/3ef76b7cf4210.pdf
    • http://files.kcgtransport.com/uploads/1/3/0/7/130775997/770473.pdf
    • http://files.patriciakreyes.com/uploads/1/3/1/3/131384721/robibizajene.pdf
    • https://8dd45727-9618-4275-ab43-61ad9ef27266.filesusr.com/ugd/0bcf16_8f2c45dc0bb349f9a793e762f2a08953.pdf?index=true
    • https://6e177d71-3850-45b8-9547-7df5e7945405.filesusr.com/ugd/b2ba6b_078321e849f24afb9c30e5c137741387.pdf?index=true
    • https://626fd387-c925-4181-9998-7075ec7e0a9e.filesusr.com/ugd/756799_22fdbfa6392c43cc8785365289f3cf67.pdf?index=true
    • https://2fb989d8-c56a-4d8d-8349-4f9ccd26995a.filesusr.com/ugd/de02f3_2ca5f2eb4ed449fb981a09fe207eb2d0.pdf?index=true
    • https://ce7093c6-739f-465a-8b2e-c2574c86ebe3.filesusr.com/ugd/d902bb_cf68b61fcedc4a5187602562edbfa5a7.pdf?index=true
    • 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_off0000484f.bin
a0c1bfda9a72f97e8a386ed0a24e7baad81aecd5a27a3cba595d7364d04ae84c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x484F 4884 bytes
font_01_sfnt_off0000590b.bin
7f7e4f229d2c8ba145a02ec6598f1086a9bfd45c861524206c23dbba4ff89d09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x590B 9824 bytes

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