Malicious PDF — malware analysis report

Static analysis result for SHA-256 36e7926504826fff…

MALICIOUS

PDF

38.9 KB Created: 2020-08-17 04:05:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47ea84a14cd6f91ea6c7f8e12eea8d9d SHA-1: f8ab95bc16c1640743a413ff0587b7f8f5fdde42 SHA-256: 36e7926504826fff75dbf206c5f86651ec04f1b6258b51afa4daeb13d25f1243
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many pointing to benign Shopify URLs, but one critical link directs to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains the same keyword as the redirector URL, suggesting a lure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the malicious nature of the redirector. The presence of multiple unknown URLs further supports the malicious intent.

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=cursive+writing+practice+sheets+names
    • http://xozuk.bioskosmoschurchgov.org/uploads/1/3/1/3/131398368/bofafatates-zawekiwizo-sawisit-pikezuke.pdf
    • http://soluz.durrellodom.com/uploads/1/3/0/8/130874493/zumijal_nokulaz_lemukam.pdf
    • http://files.santafefilmsguide.com/uploads/1/3/0/9/130969965/gakukitubetet-lufomome-vofebedanajobid.pdf
    • https://cdn.shopify.com/s/files/1/0432/7538/7043/files/istvan_banyai_re_zoom.pdf
    • https://cdn.shopify.com/s/files/1/0433/6100/9818/files/jemumufefabowuwifigow.pdf
    • https://cdn.shopify.com/s/files/1/0433/9249/9877/files/vinunulejopelejagamukoka.pdf
    • https://cdn.shopify.com/s/files/1/0440/6919/1832/files/breaded_pork_cutlets_nutritional_information.pdf
    • https://cdn.shopify.com/s/files/1/0432/3773/6603/files/nigiroxipeni.pdf
    • https://cdn.shopify.com/s/files/1/0428/5959/3894/files/xodetewijo.pdf
    • https://cdn.shopify.com/s/files/1/0428/3963/8179/files/31348390125.pdf
    • https://cdn.shopify.com/s/files/1/0430/5335/1066/files/suvobufusileponos.pdf
    • https://cdn.shopify.com/s/files/1/0431/5083/5876/files/fefigulisuzebezajof.pdf
    • https://cdn.shopify.com/s/files/1/0431/6885/8276/files/bijalefanegokukibavidogas.pdf
    • https://cdn.shopify.com/s/files/1/0427/8091/7926/files/lukalunufepajidivarolikad.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_off00005b6a.bin
3ed2b5d13d9349539f14416c6abd33221b9f020d256cc4d6aa6a6c849acb2aef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B6A 5372 bytes
font_01_sfnt_off00006d9b.bin
06654c906e7f1a104f5d9f9d21d04b0b8787665d04cc2b1db169e735d44b214d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D9B 9708 bytes

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