Malicious PDF — malware analysis report

Static analysis result for SHA-256 f10a4fffa18d615a…

MALICIOUS

PDF

43.2 KB Created: 2020-08-18 23:25:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 657cc00a293e7ffa29264acf0a8063df SHA-1: 0567755d228ec2f2ffa06b30c7bf7efda8c5e907 SHA-256: f10a4fffa18d615a2d5dbdbb0058045740edaced429bbf90107e82fac9e17adf
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to external PDF files hosted on Shopify. One critical heuristic identified a link to a known malicious redirector at `https://ttraff.ru/pify?keyword=muse+exogenesis+piano+sheet+music`. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious infrastructure. The document body itself is heavily obfuscated and contains what appears to be a reference to the malicious URL.

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/pify?keyword=muse+exogenesis+piano+sheet+music
    • http://files.fluxplay.co.uk/uploads/1/3/1/4/131438449/vufufekiwod.pdf
    • http://files.smokepitfairytales.com/uploads/1/3/2/6/132695397/bc7047cce9ec.pdf
    • http://files.spiralpathpilgrimages.com/uploads/1/3/0/8/130813827/savun.pdf
    • http://files.rustywoods.com/uploads/1/3/0/9/130969118/e7190.pdf
    • http://files.npwcaz.org/uploads/1/3/2/6/132681579/fisuwepokegetowe.pdf
    • https://cdn.shopify.com/s/files/1/0447/4486/7994/files/3125989651.pdf
    • https://cdn.shopify.com/s/files/1/0440/5864/0534/files/lotirarewaweluno.pdf
    • https://cdn.shopify.com/s/files/1/0428/6667/1782/files/gewodibokamigudax.pdf
    • https://cdn.shopify.com/s/files/1/0433/3685/9813/files/69291192757.pdf
    • https://cdn.shopify.com/s/files/1/0433/5140/8799/files/27185254192.pdf
    • https://cdn.shopify.com/s/files/1/0433/3538/5243/files/nimobonemelixarukupuw.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bugasodaliza.pdf
    • https://cdn.shopify.com/s/files/1/0438/6449/0149/files/curriculum_vitae_format_sri_lanka.pdf
    • https://cdn.shopify.com/s/files/1/0435/2563/6250/files/another_example_synonym.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_off00005ac1.bin
37bd72d0a2c328b34c923c5d0f2d5074c2850acdfde11b3fbe57a25dd139f117		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AC1 5172 bytes
font_01_sfnt_off00006c41.bin
ee4fdd305165382b77b6e6c72cbeac18551f51d1653a31b488590e140cf40441		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C41 11092 bytes
font_02_sfnt_off000091ac.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91AC 4324 bytes

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