Malicious PDF — malware analysis report

Static analysis result for SHA-256 5148450c9bc8be56…

MALICIOUS

PDF

41.0 KB Created: 2020-08-23 06:03:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa9cd97bb2d9e349c55f029c7e1982eb SHA-1: a5297afce39d017e105287386b51993f99841951 SHA-256: 5148450c9bc8be56746be326185315a7037bf18625438df73b63dd588273af21
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=arduino+ide+software+information+pdf'. This URL is presented within the document body, suggesting a social engineering lure to trick the user into visiting a potentially harmful website. The PDF also exhibits characteristics of a link farm, with numerous external links, further supporting a malicious intent.

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=arduino+ide+software+information+pdf
    • http://files.olympiaskate.org/uploads/1/3/1/8/131871439/98adc.pdf
    • http://files.sacredvoicestudios.com/uploads/1/3/1/4/131483154/kidifobes.pdf
    • http://files.makingcollegemorecommon.com/uploads/1/3/1/1/131163563/foxumawaruku-sebetatadeju-kulipujo-dajifudimam.pdf
    • https://cdn.shopify.com/s/files/1/0439/2747/0235/files/gaken.pdf
    • https://cdn.shopify.com/s/files/1/0435/5820/7643/files/python_set_vs_list.pdf
    • https://cdn.shopify.com/s/files/1/0432/5077/8275/files/scratch_game_programming_for_young_adults.pdf
    • https://cdn.shopify.com/s/files/1/0431/0528/8349/files/tumelowanefatufoki.pdf
    • https://cdn.shopify.com/s/files/1/0437/9721/7440/files/cattell_culture_fair_iii.pdf
    • https://cdn.shopify.com/s/files/1/0437/8004/7010/files/crayola_calligraphy_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0435/6872/6171/files/zipiji.pdf
    • https://cdn.shopify.com/s/files/1/0432/1152/2209/files/dogezedekije.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/1/0432/5077/8275/file

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000633f.bin
6b43ca3ce7675cba2473128a601b1c1edf501c21e68a6126ddfde9477e1ce14c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x633F 5236 bytes
font_01_sfnt_off00007505.bin
83ee3b3be950d0d7f1cc25f480b7698ecad959f2281bbada40fca9d7a423ff93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7505 9980 bytes

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