Malicious PDF — malware analysis report

Static analysis result for SHA-256 26df664d7b4feed8…

MALICIOUS

PDF

64.3 KB Created: 2020-08-30 21:12:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a56d313a9c50400fe7e172ab7387e272 SHA-1: b7194e82874d9c83f81fe4a6a58180c1f1044ef6 SHA-256: 26df664d7b4feed8eceb39a82a85b64679f8bae0b4da96bbb879d9875724e4f6
150 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, a common tactic for SEO link farms and phishing. One of these links, 'https://ttraff.ru/wix?keyword=chanson+les+copains+d%252527+abord', is flagged as a known malicious redirector. The presence of numerous links, including the malicious one, suggests an attempt to direct users to potentially harmful content or phishing sites. No scripts were extracted, and the document body is largely unreadable binary data.

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.ru/wix?keyword=chanson+les+copains+d%252527+abord
    • https://cdn.shopify.com/s/files/1/0432/6873/5140/files/australian_groundwater_modelling_guidelines_barnett_2012.pdf
    • https://cdn.shopify.com/s/files/1/0433/5999/4014/files/practical_machine_learning_a_new_look_at_anomaly_detection.pdf
    • https://cdn.shopify.com/s/files/1/0439/1773/8152/files/netonigetelagulun.pdf
    • https://cdn.shopify.com/s/files/1/0431/4192/2982/files/42032174587.pdf
    • https://cdn.shopify.com/s/files/1/0428/2440/1063/files/kiwekitozemibemoleluju.pdf
    • https://cdn.shopify.com/s/files/1/0432/6899/7284/files/best_nfl_cheerleaders_uniforms.pdf
    • https://cdn.shopify.com/s/files/1/0438/3234/4736/files/91948950592.pdf
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/beginning_yoga_poses.pdf
    • https://cdn.shopify.com/s/files/1/0430/7920/5031/files/82419773190.pdf
    • https://cdn.shopify.com/s/files/1/0431/1960/7962/files/64903872996.pdf
    • https://cdn.shopify.com/s/files/1/0437/8466/7297/files/posatupil.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/23313492251.pdf
    • https://static.usrfiles.com/ugd/739437_82f66f7402124ee3be3bb7c5983d41b8.pdf
    • https://static.usrfiles.com/ugd/b8c837_e995d909b2bf4266af476b56856beed5.pdf
    • https://static.usrfiles.com/ugd/b8c837_1fd3144f16b54b649e4f38cf51ec528f.pdf
    • https://static.usrfiles.com/ugd/b8c837_5b978cba329c4ad791d0f43ec05f9913.pdf
    • https://static.usrfiles.com/ugd/1a89c8_b06586fee0744b818a5b8e88ec4f191b.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_off0000b4f1.bin
8c3055dc81b5864fb9e0d1f6c05964f368e1c7e2de3d7b5e1e0ecd93cfcbfe14
pdf-font-stream PDF embedded font (sfnt) at offset 0xB4F1 5240 bytes
font_01_sfnt_off0000c6b3.bin
1b0c3f71efd89ff8025a775cd728ca86d0a742c1d7ae560d2efcb1845909c8c5
pdf-font-stream PDF embedded font (sfnt) at offset 0xC6B3 14164 bytes