Malicious PDF — malware analysis report

Static analysis result for SHA-256 2beff3e084d20a4b…

MALICIOUS

PDF

47.3 KB Created: 2020-08-11 19:49:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8548d351b3b046f0ef8938e671b74966 SHA-1: c90641f6cdd3758d09762cc6edd0b5e513186d1a SHA-256: 2beff3e084d20a4b2f08357e815eb5eedde7040d94cfe35fd8a85190c53191e0
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=business+models+examples+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and benign-looking PDF filenames, suggesting a lure to entice users to click the malicious link. No scripts were extracted, but the presence of a malicious redirector is sufficient evidence of malicious intent.

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.cc/pify?keyword=business+models+examples+pdf
    • http://files.lorraineparishwriter.com/uploads/1/3/0/8/130873870/lobojixo.pdf
    • http://files.oldcountryleather.com/uploads/1/3/0/7/130739544/8570615.pdf
    • http://files.thetadprinciple.com/uploads/1/3/2/8/132814977/fuputulizu.pdf
    • http://files.gktfreechurch.com/uploads/1/3/1/4/131408056/271687.pdf
    • http://files.mylendingleaves.com/uploads/1/3/1/6/131637553/63e7f627974c4f.pdf
    • https://cdn.shopify.com/s/files/1/0431/6938/2568/files/63945012903.pdf
    • https://cdn.shopify.com/s/files/1/0432/3000/3357/files/aphis_gossypii.pdf
    • https://cdn.shopify.com/s/files/1/0430/9660/4825/files/tunukeregolem.pdf
    • https://cdn.shopify.com/s/files/1/0433/6028/8927/files/marginal_costing_formula_with_example.pdf
    • https://cdn.shopify.com/s/files/1/0430/7124/2391/files/31354968456.pdf
    • https://cdn.shopify.com/s/files/1/0428/3128/2335/files/jspdf_autotable_angular_6_example.pdf
    • https://cdn.shopify.com/s/files/1/0428/2961/1171/files/35200703512.pdf
    • https://cdn.shopify.com/s/files/1/0448/0329/3346/files/photographic_memory_books.pdf
    • https://cdn.shopify.com/s/files/1/0439/1282/2952/files/animals_and_their_sounds_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/8316/0983/files/24487239779.pdf
    • https://cdn.shopify.com/s/files/1/0435/8458/5883/files/sekizaxinikojuxu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4907/4336/files/kidalisisixemakamibuwano.pdf
    • https://cdn.shopify.com/s/files/1/0437/0874/3835/files/business_process_management_jeston.pdf
    • https://cdn.shopify.com/s/files/1/0434/4987/6630/files/37267667295.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_off00006ac8.bin
690f8765f7de3a1948496c20004b17d0c0ea4d277f289d2dc83de342535aa044		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC8 5012 bytes
font_01_sfnt_off00007bb8.bin
88f6af6f069cae8711500b748b422bced583c83672a1effdc5afa30b1d30874c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB8 11632 bytes
font_02_sfnt_off0000a1cd.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1CD 4324 bytes

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