Malicious PDF — malware analysis report

Static analysis result for SHA-256 59ea8d98d6bfae67…

MALICIOUS

PDF

39.2 KB Created: 2020-08-11 21:17:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87c12d4f726d60f3bba5460e411a60b0 SHA-1: 44a6d121ba355e7528ee38c565be0b5ca1a11723 SHA-256: 59ea8d98d6bfae67439e4f951afa867be78ccbb69daa15b50297ceed0d40ffed
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same URL found in the redirector heuristic, suggesting a deliberate attempt to lure the user to this malicious domain. The primary attack pattern involves social engineering through a seemingly innocuous document that hides a malicious link.

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.com/pify?keyword=appassionata+3rd+movement+sheet+music+pdf
    • http://files.realtalkusvi.com/uploads/1/3/1/1/131163752/tutuva.pdf
    • http://files.ceffortwayne.com/uploads/1/3/1/0/131071277/bapalado_tebemuzepa_xunabij_givobiz.pdf
    • http://files.cecespatsysboutique.com/uploads/1/3/2/7/132712174/577847.pdf
    • http://gufodis.michelefioretti.com/uploads/1/3/0/8/130874043/d103f9cf.pdf
    • https://cdn.shopify.com/s/files/1/0428/7594/5113/files/1974700560.pdf
    • https://cdn.shopify.com/s/files/1/0434/5335/0040/files/bokuxazedido.pdf
    • https://cdn.shopify.com/s/files/1/0435/3287/7976/files/8618583709.pdf
    • https://cdn.shopify.com/s/files/1/0431/1266/1152/files/vodewotubumodagesegikatup.pdf
    • https://cdn.shopify.com/s/files/1/0432/5395/6758/files/99433070805.pdf
    • https://cdn.shopify.com/s/files/1/0433/0084/7781/files/2315035948.pdf
    • https://cdn.shopify.com/s/files/1/0433/9705/4631/files/william_stallings_operating_systems.pdf
    • https://cdn.shopify.com/s/files/1/0432/4029/2520/files/nobapadi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7285/5957/files/git_discard_all_local_changes.pdf
    • https://cdn.shopify.com/s/files/1/0440/4156/8421/files/mutixunafufupa.pdf
    • https://cdn.shopify.com/s/files/1/0433/6500/7509/files/zanoze.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_off00004c32.bin
c7ac978881aa3ae5ed3dd6a2034e4b83b140e709d5f4867b3b823b45d060bff6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C32 5576 bytes
font_01_sfnt_off00005efa.bin
531ce980457e8c130fab3cd84729ba6fbfff724bcd59b355e47edee2423f14f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFA 14884 bytes

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