Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b472fe7ccd7964d…

MALICIOUS

PDF

46.6 KB Created: 2020-08-31 02:30:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b29bb9f5573916e599cd94f0e5cbbd03 SHA-1: 0c7c5784a2a9f1eb354f5c12f07dd713f3d7a369 SHA-256: 3b472fe7ccd7964dfd0a4e2dfff383826e5366e6551590436e727de635f8ce3b
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=aghora+3+book+pdf'. This indicates an attempt to direct users to malicious infrastructure. Additionally, a PDF SEO link farm heuristic fired, suggesting the document is part of a larger scheme to generate traffic or distribute malicious content. The ML classifier also strongly flagged this PDF as malicious.

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.cc/wix?keyword=aghora+3+book+pdf
    • https://static.usrfiles.com/ugd/6da380_98166eb498d74cfe9198488e941b14ef.pdf
    • https://static.usrfiles.com/ugd/b8c837_794720be077449388cd86d87b8f395c3.pdf
    • https://static.usrfiles.com/ugd/5899d5_2b85a0df9f4b47e08279b61c2a2efb7d.pdf
    • https://cdn.shopify.com/s/files/1/0428/4570/0262/files/84632617501.pdf
    • https://cdn.shopify.com/s/files/1/0428/7057/1174/files/wemakexibajasop.pdf
    • https://cdn.shopify.com/s/files/1/0432/4301/2256/files/21992974003.pdf
    • https://cdn.shopify.com/s/files/1/0428/9419/6902/files/57186297686.pdf
    • https://cdn.shopify.com/s/files/1/0434/7002/8966/files/m1_carbine_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/dsssb_je_admit_card_2018.pdf
    • https://cdn.shopify.com/s/files/1/0438/0144/4512/files/heterogeneous_catalysis_principles_and_applications.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_off00006c50.bin
09e20f81d25ec138233a01fece39631833841aef267e8672fc4d28e93990361e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C50 4888 bytes
font_01_sfnt_off00007ced.bin
d9ee8fcd3f4f659a3b3b945a6beefe8594eba9da709b0a7efbd9f055a5ad48f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CED 10272 bytes
font_02_sfnt_off0000a00c.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA00C 4324 bytes

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