Malicious PDF — malware analysis report

Static analysis result for SHA-256 2faa6e7e63850efa…

MALICIOUS

PDF

52.8 KB Created: 2020-08-30 05:04:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f4593abd5825bcc63f0a988c821e792 SHA-1: 8c7ea7e11a8c6903eae9ef90dc04f892d387c453 SHA-256: 2faa6e7e63850efa3d9214204ff506753f740d85629026b7d038f2b8d68694f5
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link farm heuristic, indicating it is designed to host numerous external links. One of these links, 'https://ttraff.ru/wix?keyword=ventajas+y+desventajas+de+la+bitacor', is identified as a malicious redirector. The document body, though partially corrupted, contains this URL and appears to be a lure related to 'advantages and disadvantages of the logbook'. The presence of multiple embedded URLs, with one leading to a malicious redirector, suggests an attempt to direct users to malicious content.

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.ru/wix?keyword=ventajas+y+desventajas+de+la+bitacor
    • https://static.usrfiles.com/ugd/64d889_110b583e63a74062ad8869053f52d504.pdf
    • https://static.usrfiles.com/ugd/b8c837_abe6bba0a8304adcb885ee555a61a8ab.pdf
    • https://static.usrfiles.com/ugd/c8a981_035b88b466854d79aac18077970108bc.pdf
    • https://static.usrfiles.com/ugd/67f5f7_b65b51c8b646406d98ac790e237391f4.pdf
    • https://static.usrfiles.com/ugd/238140_ba01783cb764422ba9299c854d513dc8.pdf
    • https://cdn.shopify.com/s/files/1/0464/9045/2120/files/challenging_quiz_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/1135/0439/files/36557118454.pdf
    • https://cdn.shopify.com/s/files/1/0459/8867/5751/files/45511360660.pdf
    • https://cdn.shopify.com/s/files/1/0434/8110/4541/files/fuxoxobolekovin.pdf
    • https://static.usrfiles.com/ugd/b8c837_179928909eac40b2b6fdd4043b1e727b.pdf
    • https://static.usrfiles.com/ugd/271e65_b8cc730f8c0f4a63a72f5ae552123d51.pdf
    • https://static.usrfiles.com/ugd/3ceeb9_9fe3ee5dfe754d008fb4336bba453cbf.pdf
    • https://static.usrfiles.com/ugd/cafc24_89ce293858484bc7b1f86d9487b4613c.pdf
    • https://static.usrfiles.com/ugd/b8c837_bdc032211353441aaf2642c7d3f9f21f.pdf
    • https://cdn.shopify.com/s/files/1/0439/2475/0491/files/introductory_circuit_analysis_boylestad.pdf
    • https://cdn.shopify.com/s/files/1/0428/1932/2022/files/15075982341.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wirokole.pdf
    • https://cdn.shopify.com/s/files/1/0434/2536/6165/files/bujebusugupumobazoli.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_off000080d4.bin
c80b935bb2e72fbf0bb54bead4dcf673e2ee9ff5a06d35ab91e29c0786333a85
pdf-font-stream PDF embedded font (sfnt) at offset 0x80D4 1696 bytes
font_01_sfnt_off000088fe.bin
d346120c13fedf96820b6c9f3de04f13c505bbe45866da51d57638c6c996a3ad
pdf-font-stream PDF embedded font (sfnt) at offset 0x88FE 5276 bytes
font_02_sfnt_off00009b05.bin
3024b0a39f96c2f7c08fe2a4358677b86bf929bfdbdac5c85545ad314b8668bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B05 12624 bytes