Malicious PDF — malware analysis report

Static analysis result for SHA-256 19eeafe99ec57cbd…

MALICIOUS

PDF

44.0 KB Created: 2020-07-31 07:08:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52b0d48bae82bccbeb33ccb6e2dcd9f0 SHA-1: b2b0d913110622bb4ffcda0305d5d6e552d9eb43 SHA-256: 19eeafe99ec57cbd85d8be873c87b8577d365428a5c03439581adce29fb965f9
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains, likely as part of an SEO link farm. One critical heuristic firing indicates a link to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create documents for SEO manipulation or phishing lures. The primary attack vector appears to be directing users to malicious infrastructure through these embedded links.

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=definicion+de+amarillismo+pdf
    • http://files.karencannon.net/uploads/1/3/2/6/132681476/1628952.pdf
    • http://files.teachloveinspirecreate.com/uploads/1/3/2/6/132682110/zepuramaxetesigin.pdf
    • http://files.heartlandcustomfarmtoys.com/uploads/1/3/0/8/130814101/bavijowuwazi.pdf
    • http://files.cleaninvention.com/uploads/1/3/1/8/131856844/9e701a5b1f5b55d.pdf
    • http://files.cleaninvention.com/uploads/1/3/1/8/131856844/9e701a5b1f5b55d
    • https://cdn.shopify.com/s/files/1/0435/0319/0181/files/69857338917.pdf
    • https://cdn.shopify.com/s/files/1/0431/7731/2405/files/52163126848.pdf
    • https://cdn.shopify.com/s/files/1/0440/6794/6648/files/24488492915.pdf
    • https://cdn.shopify.com/s/files/1/0430/8733/1481/files/23250505983.pdf
    • https://cdn.shopify.com/s/files/1/0430/2041/9226/files/27815545797.pdf
    • https://cdn.shopify.com/s/files/1/0433/1077/6478/files/94086449135.pdf
    • https://cdn.shopify.com/s/files/1/0431/8455/4135/files/vufugoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/5029/4678/files/79847516740.pdf
    • https://cdn.shopify.com/s/files/1/0437/7716/3416/files/gozabi.pdf
    • https://cdn.shopify.com/s/files/1/0430/4535/5674/files/nimamaxafurimuwise.pdf
    • https://cdn.shopify.com/s/files/1/0436/5965/7374/files/18580578905.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_off00006cac.bin
7b7506a33f5a163107b4e34ce126665f4adee7573eaffb2b4619f3f2d9e8a847		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CAC 5008 bytes
font_01_sfnt_off00007d90.bin
0d641aa92ef0372a3eb027168a2938e200207d64ed88d2fa88a2d96e4d2d54a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D90 11100 bytes

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