Malicious PDF — malware analysis report

Static analysis result for SHA-256 29d6008a29d23601…

MALICIOUS

PDF

45.9 KB Created: 2020-09-01 04:40:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98a7818095cf2620f4468e53c58cedef SHA-1: ebb1e183079bd640fef653e76b52326a8080870a SHA-256: 29d6008a29d23601a3bf0e795b49c4ec553e54c4159d94f16301f8ac48bca0c5
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 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'miel de abeja pdf' and the malicious URL, suggesting a lure. The presence of numerous external PDF links, many hosted on 'static.usrfiles.com', indicates a link farm strategy, likely to improve SEO for the malicious redirector. No scripts were extracted, and the PDF structure itself does not indicate specific exploitation, but rather social engineering via a malicious link.

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=definicion+de+miel+de+abeja+pdf
    • https://static.usrfiles.com/ugd/b8c837_4c69bdd5ea6641f28ed114ab42664ee6.pdf
    • https://static.usrfiles.com/ugd/0a0016_08a2f037a3044a4cb9aa4006fa4d4f7d.pdf
    • https://static.usrfiles.com/ugd/77941b_738a6028500641d8ae851fa13f0cd4c5.pdf
    • https://static.usrfiles.com/ugd/b8c837_8801ef0e5bec44738a311b88c4222d24.pdf
    • https://static.usrfiles.com/ugd/7603ae_1cf7b8b725f54a808b36706aba201775.pdf
    • https://static.usrfiles.com/ugd/6c032c_f5485dc758d7441ea59ea5eb3cdac3d5.pdf
    • https://static.usrfiles.com/ugd/769f78_ead74e65e1fb42248fe25553d32f3043.pdf
    • https://static.usrfiles.com/ugd/99965f_6fd6b2834cff4ab69ce4d2272eae6b47.pdf
    • https://static.usrfiles.com/ugd/48f461_203cb95f4d98479588bd53de165c6939.pdf
    • https://static.usrfiles.com/ugd/eda9ba_b44d73b111964626996a5ac701d4a351.pdf
    • https://cdn.shopify.com/s/files/1/0437/9177/7949/files/bhopal_gas_disaster.pdf
    • https://cdn.shopify.com/s/files/1/0431/2884/8538/files/nutobo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9704/7718/files/vapofo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0369/8600/files/basic_tactics_for_listening_third_edition_answer_key.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_off000073f8.bin
3ee1b3162eca02b9d3fea6151c49abba1323c1eacefd6062c58c53b7c7038fe9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73F8 5240 bytes
font_01_sfnt_off000085c5.bin
1f973d73b5a2c2087e0535f5327f9ecf369c3915ae3c97cebddf3066dcf4fce4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85C5 11032 bytes

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