Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1556683c9b4d12d…

MALICIOUS

PDF

66.8 KB Created: 2020-08-07 01:46:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57755c835f060a5b333050099c367fdc SHA-1: 4a3129ab6b823375dcbfcd8f4e60de1aa476e7b8 SHA-256: f1556683c9b4d12d8604f59832f344e052fbfca024481a661779729459223dc5
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary one leading to a Shopify domain. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=quaternary+structure+of+protein+pdf', reinforcing the 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.com/pify?keyword=quaternary+structure+of+protein+pdf
    • http://files.nelsonmassage.com/uploads/1/3/1/0/131069893/defbf05.pdf
    • http://files.ironoakcanyonranch.com/uploads/1/3/1/4/131407361/9bba2a29.pdf
    • http://files.mrviolinsd.com/uploads/1/3/1/6/131606762/4112552.pdf
    • https://cdn.shopify.com/s/files/1/0437/9151/5808/files/paxovubozit.pdf
    • https://cdn.shopify.com/s/files/1/0428/7502/7619/files/incidencia_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0439/3598/9915/files/30750782603.pdf
    • https://cdn.shopify.com/s/files/1/0435/7583/6835/files/cancionero_con_acordes_de_guitarra.pdf
    • https://cdn.shopify.com/s/files/1/0434/2831/5288/files/60498221122.pdf
    • https://cdn.shopify.com/s/files/1/0445/5186/4484/files/ain_t_no_sunshine_lyrics_and_chords.pdf
    • https://cdn.shopify.com/s/files/1/0432/9452/3552/files/c_class_header_file_and_implementation.pdf
    • https://cdn.shopify.com/s/files/1/0429/2290/1663/files/18221994380.pdf
    • https://cdn.shopify.com/s/files/1/0434/0655/7347/files/carcinoma_pulmonar_tratamiento.pdf
    • https://cdn.shopify.com/s/files/1/0430/9070/6589/files/64250897268.pdf
    • https://cdn.shopify.com/s/files/1/0447/9136/5792/files/effects_of_soil_pollution_on_animals.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_off0000c7be.bin
8a670f0b7b18ba1f739b94678d96db39025a2d07eed180724abc9befedf11b1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC7BE 5280 bytes
font_01_sfnt_off0000d9cc.bin
eec12873385a5a235de442e6fdb2b1fa702c2ff50dedee51850fed9082573d4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9CC 10612 bytes

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