Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b66e6bdaead3433…

MALICIOUS

PDF

42.2 KB Created: 2020-08-29 10:41:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 884b44b3b8c4171bebe634d0de16ae51 SHA-1: 3633eba020203bfb5ee22ec79f33c4c3c48a2a41 SHA-256: 9b66e6bdaead34337d21e6e32bdac9863be2b92a97c24c0cd96d882b48dbcd97
160 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, which points to 'ttraff.cc'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, some of which are hosted on Shopify. The presence of the 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests that the document may be part of a multi-stage attack, potentially instructing the user to open a password-protected archive, which is a common tactic to bypass security gateways. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/wix?keyword=turilli+lione+rhapsody+zero+gravity+download
    • https://cdn.shopify.com/s/files/1/0437/0300/9430/files/67459612531.pdf
    • https://cdn.shopify.com/s/files/1/0437/0019/1387/files/crystalline_and_amorphous_materials.pdf
    • https://cdn.shopify.com/s/files/1/0434/3860/4450/files/1040831281.pdf
    • https://static.usrfiles.com/ugd/b8c837_cd1db809a18e444b985757bc68cd7cfc.pdf
    • https://static.usrfiles.com/ugd/b8c837_5eb25f9902e447c89147184e0b68948f.pdf
    • https://cdn.shopify.com/s/files/1/0432/7977/7952/files/class_12_english_deep_water.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5682/files/riwaduwigosexuzedufewozot.pdf
    • https://cdn.shopify.com/s/files/1/0434/1714/1415/files/sunezugebili.pdf
    • https://static.usrfiles.com/ugd/b8c837_d981cf72802143b6b7f0c835c72fc7fa.pdf
    • https://static.usrfiles.com/ugd/b8c837_fd358eb5139245329059b49ec75e6d3d.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_off00005b01.bin
e0cb31a1e271fa1a4035778a66b12f173ec4ac7d0b236f145d295ed6d3b971c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B01 5476 bytes
font_01_sfnt_off00006db5.bin
bde2edd445b7da5c11cd721ebad8f0107030369f21e8aa8a17e8ab21eb296781		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB5 14916 bytes

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