Malicious PDF — malware analysis report

Static analysis result for SHA-256 e07acadcb0f8d389…

MALICIOUS

PDF

65.4 KB Created: 2020-08-15 02:23:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a4fd59d73ecf5dec40d4d26043f37d8c SHA-1: 3b67cff35091e66636f3bafdfc380e153b766978 SHA-256: e07acadcb0f8d389aed35840ff9dafc6bec98628a36dfedcc6b0332b412b86f3
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 'https://ttraff.com/pify?keyword=belfast+agreement+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the target URL, suggesting a lure to a malicious site.

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=belfast+agreement+pdf
    • http://duleme.boyrazak.com/uploads/1/3/2/3/132302872/6239975.pdf
    • http://vonif.massrealestatewholesalers.com/uploads/1/3/0/7/130775934/jipoka-limajisagul-xuwuvarokogeku.pdf
    • http://files.clinicaespacosaudebeleza.net/uploads/1/3/2/6/132682892/2618356.pdf
    • http://sovozaro.exclusivelyyourvilla.com/uploads/1/3/2/6/132681352/6688302fa9fcf9.pdf
    • https://cdn.shopify.com/s/files/1/0434/7723/7917/files/kiwuwotoleweje.pdf
    • https://cdn.shopify.com/s/files/1/0434/9424/4516/files/miocardiopata_hipertrofica.pdf
    • https://cdn.shopify.com/s/files/1/0436/5660/9957/files/mister_babadook_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/2171/3060/files/jeginokokosetaseg.pdf
    • https://cdn.shopify.com/s/files/1/0429/8801/1673/files/fulugepiganasitotuk.pdf
    • https://cdn.shopify.com/s/files/1/0435/8311/1325/files/28327680944.pdf
    • https://cdn.shopify.com/s/files/1/0433/3669/5959/files/24403725123.pdf
    • https://cdn.shopify.com/s/files/1/0432/7840/1700/files/narenukefo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3436/1503/files/pugekuwokemuvovevesuwinum.pdf
    • https://cdn.shopify.com/s/files/1/0430/5820/0725/files/14464931146.pdf
    • https://cdn.shopify.com/s/files/1/0430/8844/5591/files/oslo_middle_school.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_off0000c2b9.bin
42819d793bbca31e6c05de2d2c3163b807dcb16e695b1f165fc3418712ecd55d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC2B9 5408 bytes
font_01_sfnt_off0000d500.bin
257980e401a21aea673483b95cfd6b02d16ebe300d1949b2e095e09a69b2dbfd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD500 10516 bytes

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