Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f2c301547ca5871…

MALICIOUS

PDF

42.3 KB Created: 2020-08-04 05:52:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a05bdf1c46cd2f63dcc33487da7e15af SHA-1: 7160db7fc2ec6b943190ae5ed0e70698b9c8b75d SHA-256: 9f2c301547ca5871380f2968884206ef288604498ed8312882ef73a1d8667597
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, disguised as a Bundesliga schedule. This indicates a likely phishing or malware distribution attempt. The PDF also exhibits characteristics of a link farm, with numerous links to external PDFs, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the primary malicious activity appears to be the redirection to the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=bundesliga+spielplan+19+20+pdf
    • http://files.hannahchambers.net/uploads/1/3/1/6/131636954/buzitimomuf.pdf
    • http://files.4thdvpanecs.com/uploads/1/3/1/8/131856326/8215679.pdf
    • http://taluwu.bodyinthewindowseat.com/uploads/1/3/2/6/132683188/8111805.pdf
    • http://files.artistbrittneyg.com/uploads/1/3/1/4/131437889/japimibazi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4895/1194/files/the_mistress_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/5981/4306/files/34564884952.pdf
    • https://cdn.shopify.com/s/files/1/0434/5105/6285/files/nudisulidumabif.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/zomivavelugafimeju.pdf
    • https://cdn.shopify.com/s/files/1/0430/0318/3258/files/82547881297.pdf
    • https://cdn.shopify.com/s/files/1/0433/6674/4216/files/60681965585.pdf
    • https://cdn.shopify.com/s/files/1/0430/2556/3799/files/42616870746.pdf
    • https://cdn.shopify.com/s/files/1/0428/8305/5782/files/66673508425.pdf
    • https://cdn.shopify.com/s/files/1/0428/9137/8854/files/73189428590.pdf
    • https://cdn.shopify.com/s/files/1/0440/7502/4549/files/felativokafunitenigaw.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005700.bin
61a99864cbde4bfa841416efb96461e7960c347c90834c11b3df07864781b1b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5700 5336 bytes
font_01_sfnt_off0000692d.bin
9211e806cd921bc47ce63b5002d77262712dd5cf6c089fa6572d0b948a3acca5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x692D 11196 bytes
font_02_sfnt_off00008d09.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D09 4324 bytes

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