Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9ab935c2c9f0801…

MALICIOUS

PDF

45.3 KB Created: 2020-09-05 10:50:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 466e53fe7b066bc34b3888b6fd4ec2fd SHA-1: 0f3185888807edc779ecdee28eced9e664c19f38 SHA-256: f9ab935c2c9f0801fe3eda0de35f85e5e14c235154696211e7e64662ea3cd63c
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.me/wix?keyword=adobe+photoshop+elements+7+pc+free'. This indicates an attempt to lure users to a malicious site, likely for phishing or malware distribution. The document also contains a PDF link farm heuristic, suggesting it's part of a larger SEO poisoning effort to drive traffic to potentially malicious content. No scripts were extracted, but the presence of the malicious URL is sufficient evidence for the attack pattern.

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.me/wix?keyword=adobe+photoshop+elements+7+pc+free
    • https://static.usrfiles.com/ugd/40336e_4bd703bd6429423da40e56cd6e0f7661.pdf
    • https://static.usrfiles.com/ugd/6c313a_a5c274163af9402aa7e8b79b658f4eda.pdf
    • https://static.usrfiles.com/ugd/46429b_b68411f9d475471baf47d6efed464b1c.pdf
    • https://cdn.shopify.com/s/files/1/0460/6227/2667/files/zotexepagipel.pdf
    • https://cdn.shopify.com/s/files/1/0430/9578/5629/files/60463232708.pdf
    • https://cdn.shopify.com/s/files/1/0432/6447/5304/files/70082508468.pdf
    • https://static.usrfiles.com/ugd/89064d_27470c1915eb4a40b46f81d45b32bec1.pdf
    • https://static.usrfiles.com/ugd/b8c837_13e024c22b224f67929a160576ea031c.pdf
    • https://static.usrfiles.com/ugd/0a0016_b5fe3b39fdde4fb18312ba995e336fa5.pdf
    • https://static.usrfiles.com/ugd/f1780b_c21d395eef8b4f5fae5abaa523ff2659.pdf
    • https://static.usrfiles.com/ugd/b18e4d_3d018858015a4551ae7c384f17332cfb.pdf
    • https://static.usrfiles.com/ugd/b8c837_72dca2aab43849c2831309232ee23de5.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_off000072c3.bin
f8bdd664f7f9bdb3efdf20aa22708e00ff64299dfe678322c0bfda4fba55cf2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72C3 5392 bytes
font_01_sfnt_off000084fc.bin
a5e1171ccda7867b6d4399ad671803fe7a4172bc4996131601e2089c99557c59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84FC 10488 bytes

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