Malicious PDF — malware analysis report

Static analysis result for SHA-256 eda23c539717c389…

MALICIOUS

PDF

34.3 KB Created: 2020-08-19 23:02:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c128103cbc9feab38556faef099377c SHA-1: 4283db8c6bc2187516cbeb5b219560f19dbb7a3b SHA-256: eda23c539717c389abab986b0749927dddaace5ce9a126de4a85c10a729c3b56
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is presented in the context of a 'termite compliance certificate template'. The document body, though heavily obfuscated, contains this URL and other Shopify-hosted PDF links, suggesting a link farm designed to attract traffic. The primary intent appears to be directing users to malicious infrastructure via the ttraff.cc redirector.

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.cc/pify?keyword=termite+compliance+certificate+template
    • http://files.newjerseyalmanac.com/uploads/1/3/1/4/131414743/nozesegewupamuraxipa.pdf
    • http://files.jeffwatsonhomes.com/uploads/1/3/2/6/132682778/xivezosepit.pdf
    • https://cdn.shopify.com/s/files/1/0435/7108/5475/files/arabalar_5_kurua.pdf
    • https://cdn.shopify.com/s/files/1/0428/4655/2230/files/53028342134.pdf
    • https://cdn.shopify.com/s/files/1/0433/7149/5589/files/43142857116.pdf
    • https://cdn.shopify.com/s/files/1/0432/3406/6600/files/zejaniruwol.pdf
    • https://cdn.shopify.com/s/files/1/0464/7275/7406/files/18909029891.pdf
    • https://cdn.shopify.com/s/files/1/0441/3744/7576/files/72704536067.pdf
    • https://cdn.shopify.com/s/files/1/0441/2735/5032/files/49762481617.pdf
    • https://cdn.shopify.com/s/files/1/0440/2901/8262/files/78921297022.pdf
    • https://cdn.shopify.com/s/files/1/0430/3237/9545/files/33318660579.pdf
    • https://cdn.shopify.com/s/files/1/0434/0455/8488/files/chainsaw_collectors_corner.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_off00004a02.bin
dd40b991eab5b12913aff35785f1b6cdb562576ce975e991a0135c98a8992057		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A02 4932 bytes
font_01_sfnt_off00005aae.bin
4a9139e7d65fe3f5a84f2345b055a173b40b7f66606035084657f0e3c04489d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AAE 9932 bytes

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