Malicious PDF — malware analysis report

Static analysis result for SHA-256 760afa18cf2da173…

MALICIOUS

PDF

40.6 KB Created: 2020-08-09 10:17:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 928376f913a9728558211eea5f107c23 SHA-1: 78177e840ed9e18cc9023d0ab07fcefdaf9b774f SHA-256: 760afa18cf2da173b0ca4f347b736c02e4835261e1af999f4bbb7136706c60b2
120 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, directing users to 'ttraff.cc'. The document body, though heavily obfuscated, appears to contain the same URL and numerous other links, many hosted on Shopify, suggesting a link farm or SEO poisoning attempt. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a further stage of the 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.cc/pify?keyword=types+of+bandaging+in+first+aid+pdf
    • http://files.fountaincityartguild.com/uploads/1/3/0/7/130775245/b7bf6ecc.pdf
    • http://rileg.kamagraoz.com/uploads/1/3/2/6/132681670/4948095.pdf
    • http://files.laurakmaxwell.com/uploads/1/3/1/3/131379381/2405598.pdf
    • http://files.praetorium-latobicorums.com/uploads/1/3/1/3/131380934/kekuvuzob.pdf
    • https://cdn.shopify.com/s/files/1/0433/1172/6750/files/tails_os_virtualbox.pdf
    • https://cdn.shopify.com/s/files/1/0437/8578/1397/files/kixewarekimimukemu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jeravutudab.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80084587067.pdf
    • https://cdn.shopify.com/s/files/1/0428/1358/7623/files/18987071569.pdf
    • https://cdn.shopify.com/s/files/1/0435/1596/9688/files/laxulosuzaduzebiwapapukul.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94192334972.pdf
    • https://cdn.shopify.com/s/files/1/0437/0271/4536/files/autodesk_inventor_stress_analysis_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0429/5216/3482/files/desilibigezoz.pdf
    • https://cdn.shopify.com/s/files/1/0429/7805/0201/files/tofagixobuwil.pdf
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/excel_format_phone_number.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006168.bin
2bc26a0068e04edaf9417226377c2f43c649e3128f461a048dc37f9dd32cc547		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6168 5368 bytes
font_01_sfnt_off000073bb.bin
87f2c6de5acff7224168ee824493abf3cbf329096ff613847432cf7d30513b38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73BB 9864 bytes

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