Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2bafadefbb6ac02…

MALICIOUS

PDF

55.8 KB Created: 2020-08-30 18:00:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af3b32bed4c5e73cffd8a87bab929534 SHA-1: d58eabf5cf399411498385cc8138ea8ff9514cd5 SHA-256: a2bafadefbb6ac02610aff7869cfdc6622613ff8983930932df016e7f8e8798c
150 Risk Score

Malware Insights

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

The PDF document contains a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=workout+plan+maker'. This link is part of a link farm designed to deceive users. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, contains the malicious URL and references to 'workout plan maker', suggesting a social engineering lure.

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/wix?keyword=workout+plan+maker
    • https://static.usrfiles.com/ugd/a2ebd8_b717ec775cbf4dd79fa73624611c7f87.pdf
    • https://static.usrfiles.com/ugd/625844_cbae786e3db0497686a48d2bd23b954a.pdf
    • https://static.usrfiles.com/ugd/4bb894_68af6ac8d07b48c0aa5c1d620b126823.pdf
    • https://static.usrfiles.com/ugd/5ed537_8fbc4243370b4663a1730378ffc7562b.pdf
    • https://static.usrfiles.com/ugd/b8c837_d1edcb8a83c94dfea2c829b95e17ac54.pdf
    • https://static.usrfiles.com/ugd/b8c837_8f50a5e426af48a5a32e29de52799ca1.pdf
    • https://cdn.shopify.com/s/files/1/0457/6608/2716/files/62776547796.pdf
    • https://cdn.shopify.com/s/files/1/0437/0504/1051/files/91343991537.pdf
    • https://cdn.shopify.com/s/files/1/0429/2286/8892/files/different_types_of_false_ceiling.pdf
    • https://cdn.shopify.com/s/files/1/0439/1088/9624/files/73353450915.pdf
    • https://static.usrfiles.com/ugd/b8c837_c91f7b46b6004e72a4e186cd9e11a7bd.pdf
    • https://static.usrfiles.com/ugd/b8c837_d6ded65ed64640508ddf66f5508659ab.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_off0000956f.bin
f857025432ee504a565cc7d477033af67bf0d63b2261c82a134d06b186c1f1ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x956F 4864 bytes
font_01_sfnt_off0000a5ed.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA5ED 1800 bytes
font_02_sfnt_off0000ae7a.bin
2119ff7f652001738a055ee2d9990dafef478c7a2252bfa55aa7202c9079ea1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE7A 10576 bytes

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