Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f02a76f5b1bb177…

MALICIOUS

PDF

43.4 KB Created: 2020-08-19 16:32:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a860f9f01a5af41b2cc6ac2cfc05b8f6 SHA-1: c07a1bad781d3d51a3b9bbe7b525556a0e121e28 SHA-256: 8f02a76f5b1bb177e39ec7f0998d3cc500aaf33738b7f75adb45926b76a31278
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is presented in the document body, disguised as a link to free software presets. The PDF also exhibits characteristics of a link farm, with numerous external links, many pointing to Shopify domains. The ML classifier strongly indicates maliciousness.

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=lightroom+mobile+premium+presets+free
    • http://files.callawaycampaign.com/uploads/1/3/0/7/130775784/nilamudari.pdf
    • http://dobuputu.prohuntersights.com/uploads/1/3/0/7/130775732/tejizupiva.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84005007378.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/23559587776.pdf
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/hungarian_dances_4_hands.pdf
    • https://cdn.shopify.com/s/files/1/0434/4207/7852/files/subnautica_table_coral_sample.pdf
    • https://cdn.shopify.com/s/files/1/0433/3774/4534/files/kinetic_theory_properties_of_fluids_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/3486/8897/files/6987170841.pdf
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/84815478278.pdf
    • https://cdn.shopify.com/s/files/1/0439/4277/2891/files/cumulative_frequency_histogram_and_polygon.pdf
    • https://cdn.shopify.com/s/files/1/0430/0167/5939/files/67536313849.pdf
    • https://cdn.shopify.com/s/files/1/0428/1863/3894/files/46889185486.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bobidaxida.pdf
    • https://cdn.shopify.com/s/files/1/0430/6249/3345/files/nowegujakobovemujefagef.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/
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cf9.bin
7d0aa3dfa8f084c54b8875401086ccbf6fac773c39e63156099575f8838304b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CF9 5184 bytes
font_01_sfnt_off00007e86.bin
e26414ec3816ae6c80f3a2f520d8a7a845636b780fc3fb01ee0cb12226b73ea6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E86 10000 bytes

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