Malicious PDF — malware analysis report

Static analysis result for SHA-256 797887f3d176147c…

MALICIOUS

PDF

38.2 KB Created: 2020-08-09 22:54:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b84093e93636d793cc17de1508c9f3ca SHA-1: e8a2320bd40421ffdfd826ec0915ea01aa30d457 SHA-256: 797887f3d176147c225d3639e3cdc8a833f664ebacabcb6aa2527c742eec1372
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'Calendrier 2020 tunisie pdf' and the malicious URL, suggesting a lure. The presence of numerous other PDF links, many hosted on Shopify, indicates a potential link farm or SEO poisoning attempt to distribute the malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=calendrier+2020+tunisie+pdf
    • http://files.christmovementinternational.org/uploads/1/3/1/8/131872021/297fe.pdf
    • http://files.whatsnextmiddlesex.org/uploads/1/3/1/6/131606984/mobufebagosafezologi.pdf
    • http://files.canadianrivervalleyrevenge.com/uploads/1/3/0/7/130740443/5608059.pdf
    • https://cdn.shopify.com/s/files/1/0433/5039/2984/files/23510191571.pdf
    • https://cdn.shopify.com/s/files/1/0433/8758/4675/files/42663434011.pdf
    • https://cdn.shopify.com/s/files/1/0429/8326/0314/files/emotional_development_in_preschoolers.pdf
    • https://cdn.shopify.com/s/files/1/0435/7272/3875/files/filutu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7230/7875/files/webopexamu.pdf
    • https://cdn.shopify.com/s/files/1/0435/8658/4733/files/latewajugiwuwilijirid.pdf
    • https://cdn.shopify.com/s/files/1/0438/1035/7405/files/wojeluvefijasix.pdf
    • https://cdn.shopify.com/s/files/1/0431/7013/6218/files/enchainement_d_accords_guitare_basse.pdf
    • https://cdn.shopify.com/s/files/1/0429/7303/6697/files/it_project_manager_resume.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/55339353060.pdf
    • https://cdn.shopify.com/s/files/1/0433/4092/3048/files/dbt_workbook_for_borderline_personality_disorder.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_off00005488.bin
4f147724430b68e8f5ce70197c2e1ab083a0bc4279dfb26866e326b925aa4c42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5488 5216 bytes
font_01_sfnt_off0000664b.bin
d94ed303638354b0e967114b5c4c71441923c77dfec6fbbc5d30223991e992b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x664B 11236 bytes

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