Malicious PDF — malware analysis report

Static analysis result for SHA-256 75913bae97cf6452…

MALICIOUS

PDF

34.7 KB Created: 2020-10-09 04:25:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58b2247fbb8273b999637cb3a4552f18 SHA-1: e01c1999530e7ea38cba491f7b8897e6aca5a9c0 SHA-256: 75913bae97cf64523c527e16960e41d6214a95b28c7cf6862b336b0c716c277f
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ggtraff.ru/strik?keyword=dragonfable+stats+guide', suggesting a lure to a malicious site. The presence of many external PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://ggtraff.ru/strik?keyword=dragonfable+stats+guide
    • https://site-1043087.mozfiles.com/files/1043087/tilevimajewavileg.pdf
    • https://site-1043288.mozfiles.com/files/1043288/pizarufofusatumo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/5719/3895/files/como_entrar_a_la_deep_web_en_iphone.pdf
    • https://cdn.shopify.com/s/files/1/0440/5601/9109/files/noganupemixaxujuxomo.pdf
    • https://cdn.shopify.com/s/files/1/0477/3029/4940/files/pre_writing_skills_for_students.pdf
    • https://uploads.strikinglycdn.com/files/f44316af-bcba-418a-b32a-08180c0fef74/10949577101.pdf
    • https://uploads.strikinglycdn.com/files/14ee3361-81cd-41b1-b641-d1a201c2f8cc/rumunibomabuzaxexeb.pdf
    • https://uploads.strikinglycdn.com/files/6aa39924-8a27-4db0-affc-a32b45b41444/kefugawanumibamiteke.pdf
    • https://uploads.strikinglycdn.com/files/e0def04c-7a8a-4c15-a463-df8d611f19cd/63051710364.pdf
    • https://uploads.strikinglycdn.com/files/ccc5ad79-92cd-40b3-8fb7-18866256fd56/68651552996.pdf
    • https://uploads.strikinglycdn.com/files/9c142c83-a969-4fc3-a75e-3574e994ce8c/89778215879.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000626d.bin
f62087877214fd8b9ecb0ea7dc9f6f79193a662039a2995479dc0559ea22ca55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x626D 5216 bytes

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