Malicious PDF — malware analysis report

Static analysis result for SHA-256 471abe6aa8b53c7d…

MALICIOUS

PDF

47.9 KB Created: 2020-08-24 07:02:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ed0af6b9aa9fa8db5e5f7afcd6c6561 SHA-1: be02e02f394000fb3300ae9f5eba3411b67bdb29 SHA-256: 471abe6aa8b53c7d5c330b9dfd7a45871271c59cbc2ae7eebc72bea69dbefbf3
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, including one pointing to a known malicious redirector at 'ttraff.ru'. The document body text, though heavily obfuscated, includes the string 'Gta liberty city stories pc', suggesting a lure to entice clicks. The presence of a PDF link farm heuristic further indicates a malicious intent to distribute links. The file is identified as a PDF and contains embedded URLs, aligning with common delivery methods for malicious documents.

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=gta+liberty+city+stories+pc
    • http://files.spectrafoto.com/uploads/1/3/1/3/131382590/gogulexokepovipeson.pdf
    • http://files.prestonsburgchurch.org/uploads/1/3/2/3/132303075/jovomuravefidu-sexepikadugigo-jipixigiwet-bokin.pdf
    • http://doradi.migrashfarm.com/uploads/1/3/1/3/131379808/b662dc92731c27.pdf
    • http://bisekofo.ballycastlehistory.com/uploads/1/3/0/8/130874388/fodojobijek_tubarimivor_sinam_radevibefanulu.pdf
    • https://cdn.shopify.com/s/files/1/0438/4840/1046/files/mulur.pdf
    • https://cdn.shopify.com/s/files/1/0433/9020/6119/files/kuttyweb_amman_songs.pdf
    • https://cdn.shopify.com/s/files/1/0429/6874/4087/files/army_reserve_rst_form.pdf
    • https://cdn.shopify.com/s/files/1/0429/3001/2316/files/waburomowoxesoto.pdf
    • https://cdn.shopify.com/s/files/1/0428/6890/0006/files/20040390100.pdf
    • https://cdn.shopify.com/s/files/1/0433/4419/9829/files/broken_angel_whatsapp_status.pdf
    • https://cdn.shopify.com/s/files/1/0436/0116/6498/files/vomixinakesuka.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/10699911966.pdf
    • https://cdn.shopify.com/s/files/1/0432/1837/0728/files/57915856109.pdf
    • https://cdn.shopify.com/s/files/1/0437/2401/3722/files/auto_mechanic_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/3756/4839/files/network_maintenance_plan_template.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_off00007686.bin
96ba5f657986e815e47b4f6e3d9656c6b8ce77bb25e03b0097bde4109139b068		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7686 5200 bytes
font_01_sfnt_off0000884e.bin
0f9547eb19e83ac86daf5def4a29520a33fa1f8c7938fe00370284576f91ead8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x884E 13444 bytes

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