Malicious PDF — malware analysis report

Static analysis result for SHA-256 a85e4ceb3be7c0b3…

MALICIOUS

PDF

46.2 KB Created: 2020-09-05 06:46:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48ce7d3299fab2856ef1331a1bd727f7 SHA-1: 4fdfc9e1a8711a790cc311eea28593d5ba4b59e5 SHA-256: a85e4ceb3be7c0b39b653767d6d92cacfd2268972e2b9dd9f70f4aac63be663e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL, 'https://ttraff.me/pify?keyword=2012+acura+rdx+review+consumer+reports', is presented as a review of a car, likely to trick users into clicking. The document body contains garbled text but also includes the malicious URL and several benign-looking URLs hosted on static.usrfiles.com, which are part of the link farm.

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.me/pify?keyword=2012+acura+rdx+review+consumer+reports
    • https://static.usrfiles.com/ugd/5e8de6_f5cd6ddf38a54215bd929f9be05ed4d9.pdf
    • https://static.usrfiles.com/ugd/0dd040_31cf21d915f24a2c947e0577260b81eb.pdf
    • https://static.usrfiles.com/ugd/0bcf16_010e6f8a87b44c6b87fc1ebd3439625e.pdf
    • https://static.usrfiles.com/ugd/b8c837_4f5505025d5b4854ab95cd8b73e34d04.pdf
    • https://static.usrfiles.com/ugd/b8c837_cc37905c63864e108382a3c83f22ecf5.pdf
    • https://cdn.shopify.com/s/files/1/0428/6650/7943/files/tasurizilikaxonerif.pdf
    • https://cdn.shopify.com/s/files/1/0437/3908/7002/files/61267111127.pdf
    • https://static.usrfiles.com/ugd/3ce946_4c79376fe11341c284be9ba214ce1093.pdf
    • https://static.usrfiles.com/ugd/824332_07ca4661c0ad410e81ba0299c1341ef7.pdf
    • https://static.usrfiles.com/ugd/1f6d71_29de4477aa874ddcbb595bedbf085040.pdf
    • https://static.usrfiles.com/ugd/1cc777_dfe17de8ec174f828817508095ad4485.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_off00006484.bin
a30533c4a96cc6141384e4a1c35a2280f56782b0f8cec0726597bd9983f9369d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6484 5520 bytes
font_01_sfnt_off0000773b.bin
edd4e8c33474251f7118bcb702810988deb617f9ed1782a9834f89f9b133c838		 pdf-font-stream PDF embedded font (sfnt) at offset 0x773B 11800 bytes
font_02_sfnt_off00009e2b.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E2B 4324 bytes

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