Malicious PDF — malware analysis report

Static analysis result for SHA-256 617004170ef4d68f…

MALICIOUS

PDF

97.5 KB Created: 2020-09-20 03:53:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f245e296bfcedb82a005cb3bd811cb87 SHA-1: b0e5aeb51c5fc5c440643fc79d321766985d682a SHA-256: 617004170ef4d68fd84b46e6f8a81f93a84e992ad97baf2b80317a1e54d5c851
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.club, which is likely intended to lead the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains the URL and keywords that suggest a lure. The presence of numerous external PDF links, many pointing to benign Shopify domains, indicates a potential SEO poisoning or link farm tactic to obscure the malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.club/wix?keyword=skyward+sword+manual
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/7275/6648/files/jizojegezibeki.pdf
    • https://cdn.shopify.com/s/files/1/0441/3915/1512/files/kimarodakezetule.pdf
    • https://cdn.shopify.com/s/files/1/0437/9626/7165/files/movie_counter_archives.pdf
    • https://cdn.shopify.com/s/files/1/0438/3696/5029/files/13292700548.pdf
    • https://cdn.shopify.com/s/files/1/0434/4319/1960/files/79944644242.pdf
    • https://6ad8675f-0529-45bb-ac8a-5acc3168176e.filesusr.com/ugd/938c70_f2be0aac96f84338a669ebc412c4820a.pdf?index=true
    • https://1ad6a063-2256-471d-8eea-09b30699552e.filesusr.com/ugd/ed2d23_bbe00e72b3084382a3d1a442ee3f647b.pdf?index=true
    • https://b7a187ff-c59e-407d-af47-b2663dca825e.filesusr.com/ugd/599026_2806604697314bb0a197bbf8d94a452f.pdf?index=true
    • https://d28caa7c-a760-4b19-a859-b14ef17f503d.filesusr.com/ugd/6d45f6_dfb155079484468f8c200bbe9345f2e8.pdf?index=true
    • https://f3096719-2b8f-401c-a87d-1833883f8f10.filesusr.com/ugd/f68081_8b420bfb1da94d518604dbe48e9b4732.pdf?index=true
    • https://05c2de2e-daf5-4f74-aee6-305b480716ac.filesusr.com/ugd/ce4b7c_56c3356bec58400985152ef8f2ab3867.pdf?index=true
    • 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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010958.bin
3626edf381fb3f2740916489cf8aa6a1a2a51260e150a3d2726e1525111b32ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10958 17108 bytes
font_01_sfnt_off000140a9.bin
b738bfc4b99108241473c9c2c031ee7b81dab8947add92494b7485b3f5d471be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x140A9 5332 bytes
font_02_sfnt_off000152d1.bin
786169d1fa5435a043f490d136c4e106dd6a538224d9a3fa0792426d12888e6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x152D1 11348 bytes

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