Malicious PDF — malware analysis report

Static analysis result for SHA-256 c46191dff49fa41f…

MALICIOUS

PDF

51.4 KB Created: 2020-08-30 02:26:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3da09cf1f4ce3ea9198057f08e9262fe SHA-1: 63ae2aedbb2ed8602aeb7b6f982cab3f769d6526 SHA-256: c46191dff49fa41fd09b4a08c8c7dd37df7da7144ef2ff2033175df77fa7d264
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/wix?keyword=jedi+knight+windows+10'. The document body also contains this URL, suggesting it is the primary lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to static.usrfiles.com. The overall goal appears to be redirecting the user to malicious infrastructure.

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=jedi+knight+windows+10
    • https://static.usrfiles.com/ugd/dd4472_8bacfd7ceba74396a777dd1e72ba3fe3.pdf
    • https://static.usrfiles.com/ugd/b8c837_583313f13a004833a69252c5310ad09f.pdf
    • https://static.usrfiles.com/ugd/b13fd1_61397ac3ad9e415783a8544267a6caf2.pdf
    • https://static.usrfiles.com/ugd/c33cdb_edfc3e0c878a415cb8e2d93352abcabf.pdf
    • https://cdn.shopify.com/s/files/1/0432/5418/6146/files/doodle_god_apk_full.pdf
    • https://cdn.shopify.com/s/files/1/0432/5264/6050/files/bowatexawavojefaxarirukev.pdf
    • https://static.usrfiles.com/ugd/ae059d_f4b1bbabb79a4d1180a415656df12f8c.pdf
    • https://static.usrfiles.com/ugd/b8c837_a55c3657c1c346ceb08a8fe36e0100b7.pdf
    • https://static.usrfiles.com/ugd/eed56f_abb6b72af57346c49245c445a1f4c37b.pdf
    • https://cdn.shopify.com/s/files/1/0435/7645/9422/files/lagomowanas.pdf
    • https://cdn.shopify.com/s/files/1/0432/1070/3010/files/javascript_array_fill.pdf
    • https://cdn.shopify.com/s/files/1/0436/0581/9550/files/65008873502.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_off00008c1b.bin
45ec9c9fa0b62e6372da5d3e256fee1e7b886989a355240835f250c5bb578422		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C1B 5088 bytes
font_01_sfnt_off00009d7e.bin
f22f00e411002ef272d84b9c09bb406180036e70c47e983814e4a69306a998ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D7E 10308 bytes

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