Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb973714921ffeaf…

MALICIOUS

PDF

49.5 KB Created: 2020-08-01 19:13:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e1f19aa296e19891c98ae32a3b282f3 SHA-1: 4b126b899af53db179e88c8c9d05831116de1fd8 SHA-256: bb973714921ffeafb7117c01a37bbe44d3361827c70b177192fd877ca04eacce
150 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, containing numerous external links. One prominent link, 'https://ttraff.com/pify?keyword=gti+dsg+vs+manual', points to known malicious redirector infrastructure. The ML classifier also flagged this PDF with high confidence. The presence of a large number of links, including one to a malicious redirector, suggests an attempt to lure users to malicious sites or engage in SEO manipulation.

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.com/pify?keyword=gti+dsg+vs+manual
    • http://files.skatingcoachtiffany.com/uploads/1/3/1/4/131453484/dowaxuferusabejexaw.pdf
    • http://files.michaelwhitlow.com/uploads/1/3/0/8/130873921/lopimi.pdf
    • http://files.berrienbaseball.com/uploads/1/3/1/1/131164431/7714943.pdf
    • http://files.upwellings.com/uploads/1/3/1/6/131607174/c3eb020e.pdf
    • https://cdn.shopify.com/s/files/1/0435/3789/1482/files/roll20_grid_size.pdf
    • https://cdn.shopify.com/s/files/1/0428/6060/9692/files/81262865647.pdf
    • https://cdn.shopify.com/s/files/1/0428/2135/3635/files/2245456739.pdf
    • https://cdn.shopify.com/s/files/1/0427/9340/2534/files/fidobunosepiwukekafi.pdf
    • https://cdn.shopify.com/s/files/1/0440/6562/0118/files/60244347718.pdf
    • https://cdn.shopify.com/s/files/1/0437/1342/9655/files/22721338302.pdf
    • https://cdn.shopify.com/s/files/1/0433/5095/0041/files/59013146927.pdf
    • https://cdn.shopify.com/s/files/1/0429/5763/5735/files/xelobutotomelorokenuf.pdf
    • https://cdn.shopify.com/s/files/1/0430/3169/1421/files/46044885263.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_off0000766d.bin
2b69441b53e431d3f9f57d88d33fb13f718c5b4310524253ed958d65c9db67e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x766D 4796 bytes
font_01_sfnt_off000086a5.bin
1cc1cce4abf51dd22c27c76fa8ebbf778e8e5379a2c155c6bf5f9d3e6619b702		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86A5 10804 bytes
font_02_sfnt_off0000aba5.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABA5 4324 bytes

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