Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bc6212cb5ca8cdf…

MALICIOUS

PDF

40.2 KB Created: 2020-08-19 09:22:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 913f8bb3bd54d16b92d0e4ef43a6c006 SHA-1: eb44ea908d7d792fc0e07978b1081ab76fcac091 SHA-256: 3bc6212cb5ca8cdf33d2e5f55a3db356e9ec282cdd060ff87cbf5c7223f69ecb
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=ductility+test+lab+report', suggesting a lure to a malicious site disguised as a lab report. No scripts were extracted, limiting further analysis of the payload.

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=ductility+test+lab+report
    • http://files.laurascreativeattic.com/uploads/1/3/2/7/132712080/wubud-devub-bimisud-nepoz.pdf
    • http://nijepifi.bronxbrooklynqueenshalls.com/uploads/1/3/1/0/131069759/e9df52.pdf
    • http://dinebeniz.bloggingwithbray.com/uploads/1/3/1/0/131070374/posipumazeneko.pdf
    • http://nagota.melissasterry.net/uploads/1/3/0/8/130874284/zamemudesojamasaki.pdf
    • https://cdn.shopify.com/s/files/1/0431/6128/8868/files/jurnal_penelitian_bayam_merah.pdf
    • https://cdn.shopify.com/s/files/1/0437/9371/1265/files/nekepado.pdf
    • https://cdn.shopify.com/s/files/1/0435/6558/0437/files/68876115929.pdf
    • https://cdn.shopify.com/s/files/1/0433/2093/4558/files/59860784396.pdf
    • https://cdn.shopify.com/s/files/1/0431/6528/6566/files/jevugipu.pdf
    • https://cdn.shopify.com/s/files/1/0452/2138/0247/files/bexosafivebo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/2795794469.pdf
    • https://cdn.shopify.com/s/files/1/0434/3152/6557/files/60637468839.pdf
    • https://cdn.shopify.com/s/files/1/0440/3855/3765/files/how_to_block_ads_on_spotify.pdf
    • https://cdn.shopify.com/s/files/1/0434/5305/5128/files/air_pollution_project_in_marathi_file.pdf
    • https://cdn.shopify.com/s/files/1/0438/2579/1138/files/guwimu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6701/5322/files/60146203114.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_off00006152.bin
1dfa4d882ace20c75e48affae4562e282d175d24fadaefebe0c5cabd4cf15a0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6152 5168 bytes
font_01_sfnt_off000072f3.bin
d535908c2ed0446cb7215f711e4d584efb087250f234c29afc056a75bbc56fcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72F3 9724 bytes

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