Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c94c345ecb1b8c6…

MALICIOUS

PDF

39.5 KB Created: 2020-08-22 15:25:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3fe318474d104f0bbadfe00b0562c373 SHA-1: c075416f388f624aa513fc2e73f3fd9a01270b77 SHA-256: 3c94c345ecb1b8c605e4f38b1d31f0e3d0524d0947020b879ff408e969f293e8
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=facebook++all+photos+and+videos'. This URL is presented as a lure to entice users to click, likely for phishing or to download further malware. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on shopify.com and other domains, suggesting a link farm or redirection strategy. No scripts were extracted from this sample.

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=facebook++all+photos+and+videos
    • http://files.montserratcolome.com/uploads/1/3/1/4/131406295/todekelis.pdf
    • http://files.americanhistorytour.com/uploads/1/3/2/8/132815220/6d9ccd6.pdf
    • http://files.beasttviptv.com/uploads/1/3/1/6/131636586/jepamitefas.pdf
    • http://files.meowlinda.ca/uploads/1/3/0/7/130740571/57f0b78f.pdf
    • https://cdn.shopify.com/s/files/1/0432/9363/8811/files/49838257100.pdf
    • https://cdn.shopify.com/s/files/1/0432/0568/9499/files/rugby_fitness_training_program.pdf
    • https://cdn.shopify.com/s/files/1/0438/7464/8232/files/4712446051.pdf
    • https://cdn.shopify.com/s/files/1/0437/4754/1146/files/identidades_exploraciones_e_interconexiones.pdf
    • https://cdn.shopify.com/s/files/1/0428/3141/3414/files/93934993010.pdf
    • https://cdn.shopify.com/s/files/1/0434/5462/7993/files/87523657801.pdf
    • https://cdn.shopify.com/s/files/1/0427/8291/6767/files/2016_biweekly_payroll_calendar_template.pdf
    • https://cdn.shopify.com/s/files/1/0440/4245/3157/files/33164585175.pdf
    • https://cdn.shopify.com/s/files/1/0434/3991/5175/files/change_directory_python.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_off00005c6f.bin
b9af72a6498066c69984e0185ca11c3952672f548b71168b97b67b49974f14ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C6F 5284 bytes
font_01_sfnt_off00006e5d.bin
08f81112596be911aca5f98a414252b58f2f6d956078090c2cb9525cd7e2ae18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E5D 10256 bytes

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