Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f3544ea15e697d6…

MALICIOUS

PDF

71.1 KB Created: 2020-08-07 05:07:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a28579b25bf0837d6c1505011db90b3c SHA-1: 5b9f7c7acd010c61324eea5ab7765580bdd4c300 SHA-256: 7f3544ea15e697d6057aa8509463a9095dc19e59072ed85ccdc9b5f723a1280f
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=acting+career+101+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on shopify.com. The document body, though heavily obfuscated, contains the same redirector URL and a benign-looking PDF filename, 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=acting+career+101+pdf
    • http://files.eyecareconcepts.com.au/uploads/1/3/1/3/131398560/dea64b0b25398.pdf
    • http://files.michellecousins.com/uploads/1/3/1/8/131871717/dozagokawenok.pdf
    • http://files.plattecountybacktoschoolfair.org/uploads/1/3/1/4/131453194/2489454.pdf
    • http://files.orlandobathrooms.net/uploads/1/3/0/7/130738969/8679518.pdf
    • http://files.capitalcitycrew.org/uploads/1/3/0/7/130740530/nekalulolobiguweved.pdf
    • https://cdn.shopify.com/s/files/1/0429/0831/9903/files/gta_iv_cheats.pdf
    • https://cdn.shopify.com/s/files/1/0429/2067/3433/files/41427712569.pdf
    • https://cdn.shopify.com/s/files/1/0435/2439/1071/files/gowun.pdf
    • https://cdn.shopify.com/s/files/1/0435/3831/7471/files/lujurufaketi.pdf
    • https://cdn.shopify.com/s/files/1/0436/1663/2992/files/dazapaberolale.pdf
    • https://cdn.shopify.com/s/files/1/0431/0191/3244/files/19700428881.pdf
    • https://cdn.shopify.com/s/files/1/0429/6481/1927/files/17367336270.pdf
    • https://cdn.shopify.com/s/files/1/0430/6560/6301/files/words_ending_in_ness.pdf
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/somuwivojowamoxes.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/vupoxowizejazenamiderod.pdf
    • https://cdn.shopify.com/s/files/1/0430/8258/0130/files/49181765614.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_off0000d953.bin
cecf5de8355eab0e64fa10d0f9b3ffe86d774d9a831b20940b300e16c37f43d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD953 5296 bytes
font_01_sfnt_off0000eb6f.bin
2561629f6cd6f0310ece06573bd7d9d139a9cf84ba274f2d847348b6b6d3de23		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB6F 10580 bytes

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