Malicious PDF — malware analysis report

Static analysis result for SHA-256 26ba72f5cb0f5411…

MALICIOUS

PDF

71.4 KB Created: 2020-08-06 12:45:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78d6efa12679e2db346585b6e18fbbb5 SHA-1: eed0b9f7d2404835382e4b77a05b4f2c13954f1d SHA-256: 26ba72f5cb0f541119efbbb5b12add417b06a9b6f6c6ed1d71b8e8a240440743
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it's a malicious redirector link, pointing to a URL that appears to be a SEO link farm. The embedded URL in the document body, 'https://ttraff.ru/pify?keyword=algebra+and+trigonometry+ron+larson+10th+edition+pdf', is the primary indicator of malicious intent, likely leading to a phishing or malware distribution site. No scripts were extracted, but the PDF structure and embedded link strongly suggest a social engineering attack.

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.ru/pify?keyword=algebra+and+trigonometry+ron+larson+10th+edition+pdf
    • http://files.fivepointhorsetraining.com/uploads/1/3/0/7/130776483/3653087.pdf
    • http://files.miriamldiamond.com/uploads/1/3/2/3/132303269/rubuxesutebane.pdf
    • http://files.issness.com/uploads/1/3/1/6/131637640/lasapozawojir-vilokodizokufog.pdf
    • http://files.honeybeearts.org/uploads/1/3/1/4/131437889/8973396.pdf
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/43388350452.pdf
    • https://cdn.shopify.com/s/files/1/0431/4205/4048/files/sejopoluki.pdf
    • https://cdn.shopify.com/s/files/1/0430/5318/7223/files/john_wick_2_1080p.pdf
    • https://cdn.shopify.com/s/files/1/0437/7450/9213/files/bizurikusifi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0691/7799/files/the_divide_2011.pdf
    • https://cdn.shopify.com/s/files/1/0433/4488/7966/files/48178151411.pdf
    • https://cdn.shopify.com/s/files/1/0431/6227/1898/files/jujexuneg.pdf
    • https://cdn.shopify.com/s/files/1/0431/1177/6416/files/tebogipejexorivivape.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gimuwuwizarisatin.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_off0000bd5e.bin
c95b62606a4b857fc8e29ab783e27a615dba8bd985513ee9b69f22a8575aca71		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBD5E 5880 bytes
font_01_sfnt_off0000d140.bin
6ff58936f9657aeff9aba210bdec9dc04e4514c8ccda13d184f231c70f62f91d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD140 13184 bytes
font_02_sfnt_off0000facd.bin
43e84046d57c5d8edad47de9228ce36feb53c5e515436c294a71041590f3a3a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFACD 16132 bytes

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