Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcffc686c4ee3838…

MALICIOUS

PDF

41.6 KB Created: 2020-08-29 00:40:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b5cfb8c4689f8a55e154adbc2744197 SHA-1: f22249bec98af93c2e0e339ddac43067a5f18d60 SHA-256: fcffc686c4ee38381ae926ffb6113ac8433123ff3907d7ff46f3db0155941fea
128 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a malicious site. The document also features a large number of external PDF links, suggesting a link farm or SEO poisoning tactic. The presence of urgency language further supports a social engineering attack. No scripts were extracted, and the document body is heavily obfuscated, but the primary attack vector appears to be the malicious redirector link.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.cc/wix?keyword=the+book+of+gimp
    • https://static.usrfiles.com/ugd/b8c837_b78596d4ac514b358dd934118942b945.pdf
    • https://static.usrfiles.com/ugd/b8c837_0e7bc79e0ba34dc097d6464112ca8e8f.pdf
    • https://static.usrfiles.com/ugd/b8c837_9c9e79d1581144c1ba5652b781978cfe.pdf
    • https://static.usrfiles.com/ugd/b8c837_4d1a1d37448548b1a9bbe40b3a861ae5.pdf
    • https://static.usrfiles.com/ugd/b8c837_40b0e2f330ed48b687c04fd0fa65e47c.pdf
    • https://static.usrfiles.com/ugd/b8c837_dbd2e2cfcdf24fdd93365e75120b49fd.pdf
    • https://static.usrfiles.com/ugd/b8c837_fee71b3bd88146f2b0e4431291e2abf5.pdf
    • https://static.usrfiles.com/ugd/b8c837_9a685069a8e746189e747275ab7cccc3.pdf
    • https://static.usrfiles.com/ugd/b8c837_408e0eff55044fd68ccb7aff459136fc.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_off00006656.bin
87e75070a0aac369bac1f6e9f07d17132be9462a1aa28c621146dba5a662cf27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6656 4952 bytes
font_01_sfnt_off00007722.bin
5c0a856fabd5973d268990c8f1b663653acc1ed0fbbf926ababaf04a188d97df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7722 10272 bytes

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