Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd34b2ff1f4bd55e…

MALICIOUS

PDF

44.2 KB Created: 2020-08-31 21:57:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4150d7f169bf0f575c36e76825a32c7f SHA-1: 1b24763f6676e4c7bbba3c2411d3c46790feba43 SHA-256: fd34b2ff1f4bd55e2302fe70798f8c9078c6e2fc0c4df8d77ec0038e64a8b101
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a '2007 cadillac srx service manual' and the wkhtmltopdf application, suggesting a lure. The presence of a link farm heuristic further indicates an attempt to distribute malicious content through seemingly benign documents.

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/wix?keyword=2007+cadillac+srx+service+manual
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/laxefasigapabaxirasu.pdf
    • https://cdn.shopify.com/s/files/1/0438/8772/2648/files/winger_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/8523/3304/files/76689053153.pdf
    • https://cdn.shopify.com/s/files/1/0438/9427/6264/files/credit_risk_management_techniques_in_banks.pdf
    • https://cdn.shopify.com/s/files/1/0435/3002/7157/files/zopasof.pdf
    • https://cdn.shopify.com/s/files/1/0432/3069/1491/files/ipod_to_itunes_transfer.pdf
    • https://cdn.shopify.com/s/files/1/0428/9144/4390/files/surface_area_of_rectangular_prism_word_problems_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/9011/5748/files/e6_b7_98_e5_af_b6.pdf
    • https://cdn.shopify.com/s/files/1/0427/8665/2316/files/bafokoxekinisosatup.pdf
    • https://cdn.shopify.com/s/files/1/0434/7016/0032/files/coriolis_force.pdf
    • https://cdn.shopify.com/s/files/1/0462/2018/1658/files/vutorarasonuz.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_off000061e6.bin
889a8a5cf42b94bfe09c44a443254a176275551e7026a9b99479673733839688		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61E6 5164 bytes
font_01_sfnt_off00007346.bin
f12d5bc56e97b3fa0ac09608c24080bbeb3a07cc320c1439098268bb47fb8c85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7346 10192 bytes
font_02_sfnt_off00009615.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9615 4324 bytes

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