Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ef701b288b8d180…

MALICIOUS

PDF

43.1 KB Created: 2020-09-02 07:30:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aaa8090a30fad3af7eb0111f6d8b88d7 SHA-1: e676637f26432acdc02e466b265705a8201e78fe SHA-256: 3ef701b288b8d18070c05276745443260fc4a66c3cdcfa8a879d2ff295ad347f
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, a technique often used for SEO poisoning or to redirect users to malicious sites. One of the primary links, 'https://ttraff.cc/pify?keyword=bugaboo+bee+5+high+performance+rain+cover', is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body contains garbled text and product names, suggesting it's a 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.cc/pify?keyword=bugaboo+bee+5+high+performance+rain+cover
    • https://cdn.shopify.com/s/files/1/0434/7097/9238/files/grammar_english_to_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0432/0342/8510/files/zagisodegek.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/safuginogatujato.pdf
    • https://cdn.shopify.com/s/files/1/0440/6558/7352/files/living_religions_10th_edition_free.pdf
    • https://static.usrfiles.com/ugd/b8c837_e20ba82959054b1ebba7fa2ef3a01cef.pdf
    • https://static.usrfiles.com/ugd/daca0d_869cf9dafb364c4e8ffe5b4ab196ed49.pdf
    • https://cdn.shopify.com/s/files/1/0438/6933/9808/files/zasuvapebede.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94608223162.pdf
    • https://cdn.shopify.com/s/files/1/0437/5461/9041/files/simemamewuwejilo.pdf
    • https://static.usrfiles.com/ugd/ca9b0a_3b7fe3ee38804292aa0ee85550cd57d5.pdf
    • https://static.usrfiles.com/ugd/b8c837_039eb785c3ad49aeba5a0d4b715387a2.pdf
    • https://static.usrfiles.com/ugd/cc14e4_8183a858feb744acb4a6d169e2871cff.pdf
    • https://static.usrfiles.com/ugd/2c608b_7fbd423a54374baeb0a28bf8153128f5.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_off00005009.bin
4c6b1b7948c61be7fda4ddeca60b7ef60a1829d0dbf44628957cf3b63bce7774		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5009 5592 bytes
font_01_sfnt_off000062ee.bin
400dca65db17c4088e5f96a201576f875cf97b46e4ce77d7f90e3994bf36d3f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62EE 9180 bytes
font_02_sfnt_off00007cba.bin
1912457c26bf41051caade7e0feecd0a4c7a6cac96857fe440f3fe950a3f6bfc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CBA 10068 bytes

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