Malicious PDF — malware analysis report

Static analysis result for SHA-256 264665d11c12b49f…

MALICIOUS

PDF

40.5 KB Created: 2020-08-29 14:00:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a0d335df7a8fcbcdbb554669a2c899d SHA-1: 5a82ce9970bc94477d726c080b9d47528a400f5d SHA-256: 264665d11c12b49fb0c29999137f3bd279c278abd7e36ce3db570eeab27a26d3
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to 'Belarus tractor service manual pdf', suggesting a lure to trick users into clicking the malicious link. The presence of a link farm heuristic further supports the malicious intent of distributing links.

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=belarus+tractor+service+manual+pdf
    • https://static.usrfiles.com/ugd/b8c837_b2e5cc852d4841b3980b1e9a6065737e.pdf
    • https://static.usrfiles.com/ugd/b8c837_de2617ce8d394a5193ed8382d756b57f.pdf
    • https://static.usrfiles.com/ugd/b8c837_9c881a4cdd3a48caac3f3699895b18b5.pdf
    • https://static.usrfiles.com/ugd/b8c837_364f5b09f3824b2bb5030c56b7ac8775.pdf
    • https://static.usrfiles.com/ugd/cc10e7_ec2775922af946a799837cd412329c56.pdf
    • https://cdn.shopify.com/s/files/1/0435/5063/8229/files/delegation_of_authority_letter.pdf
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/jamigo.pdf
    • https://cdn.shopify.com/s/files/1/0429/4246/4163/files/89652710982.pdf
    • https://cdn.shopify.com/s/files/1/0439/4736/0414/files/john_deere_955_for_sale.pdf
    • https://cdn.shopify.com/s/files/1/0433/5557/0341/files/41223234419.pdf
    • https://static.usrfiles.com/ugd/b8c837_50fe117e663543b1a93ec9e9748e6e84.pdf
    • https://static.usrfiles.com/ugd/b8c837_f3fe03b5f37441ef8720a6ec74cb2d99.pdf
    • https://static.usrfiles.com/ugd/b8c837_6116a062326c4790a2dc33438cc672bc.pdf
    • https://static.usrfiles.com/ugd/b8c837_ea735fdcc4144816a5698b08680218e5.pdf
    • https://static.usrfiles.com/ugd/b8c837_547140e4e8ae4b859316a8ed1dda1282.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_off00006163.bin
cd45e6f8ca641d653938ca8bb19a07e10eebcacdd6a05f246e0a310e7cc4e558		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6163 5412 bytes
font_01_sfnt_off000073b4.bin
5a984da8b53404df187cfdbe17e9000267da2ea65faeb8ccb2d44c1261fa1180		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73B4 9868 bytes

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