Malicious PDF — malware analysis report

Static analysis result for SHA-256 67f217f84dbab642…

MALICIOUS

PDF

48.2 KB Created: 2020-09-17 17:10:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66d76185046b1e08258e036c98292bca SHA-1: 7dd550a66fa3457f97b1a292ceb2df26ca6faf93 SHA-256: 67f217f84dbab642ed0aca310690afdb00d764ecd82df27e59d691b42b5d8d5f
154 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a large number of embedded links, with one specifically identified as a redirector to malicious infrastructure. The document body, though heavily obfuscated, contains URLs that appear to be part of a link farm or SEO manipulation scheme. The primary malicious URL identified is ttraff.club, which is likely used to redirect users to further malicious content.

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=platform+2020+vancouver
    • http://fodexa.perchancetheatre.com/uploads/1/3/1/3/131384600/a803713e2fb1d8.pdf
    • http://files.alliedennydesigns.com/uploads/1/3/1/4/131438464/kivalegu_mekiv_mavozokewab.pdf
    • http://files.watfordvelo.com/uploads/1/3/1/4/131453208/b17f83a3f21ad.pdf
    • http://renoda.funtastic101.co.uk/uploads/1/3/0/9/130969077/tidiju.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://a4c57607-4bc6-44c2-8e1b-12822dbb792e.filesusr.com/ugd/81d6a4_3a2fdc4c2ed3411ba0a4714469d493a6.pdf?index=true
    • https://24cbfadb-1610-4e87-98a5-419c00eabb09.filesusr.com/ugd/35ddae_72b71b860a5b4fc9b449d71ed56ed73e.pdf?index=true
    • https://908066f8-e4fb-4002-8404-ab89e99ea8ae.filesusr.com/ugd/2ca09c_cb60680dc8dc4394b01e8ffaaccfceae.pdf?index=true
    • https://0d01d016-9755-46d3-89e6-7573c20a1e0f.filesusr.com/ugd/95b9ea_1a2cd515e3dc4699a8ff2ec82117f0ae.pdf?index=true
    • https://464df62d-036b-4ab7-9715-e3e987de16e0.filesusr.com/ugd/ade4e6_5e2b5f3847354dd095b63f8d71c9654e.pdf?index=true
    • https://6d17fbda-a6e3-4449-83b6-028b9e5b7a06.filesusr.com/ugd/bb05c1_f67464c5823a4f73a65d68c185cd1d43.pdf?index=true
    • https://c39f5536-bd57-4130-b3cf-8a485d2e3149.filesusr.com/ugd/b5aed9_4719a5c53d1e481494014c6b597369db.pdf?index=true
    • https://cd0acff1-5568-4e41-a91f-56c7d58f1341.filesusr.com/ugd/efb3f0_041af950915043b6a4c40051a1306c73.pdf?index=true
    • https://1808bcac-b31b-4d7f-b59c-482b6c092369.filesusr.com/ugd/d31907_9c57d45d276d4411a6f444e659970c8f.pdf?index=true
    • https://0d0b0ca7-6f54-431f-aff3-f78dc2fb69b8.filesusr.com/ugd/dcc11b_e183284d869b4976b4b7b49d372bc732.pdf?index=true
    • https://ceee61a8-d7df-4eb6-acab-7f93f2cf7b72.filesusr.com/ugd/8a05ec_1ad9cb3e78a44a0ab0a43bc2170feb0d.pdf?index=true
    • https://cb695e5b-c3b5-4295-b4b0-4528ca92a43f.filesusr.com/ugd/067ecb_bfb156db91274a7998887bf9d2d2ffad.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d61.bin
46abd11364b89a491da6e68e416a35bf47243fbb43180dade6e10adf8abef1dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D61 5184 bytes
font_01_sfnt_off00008efc.bin
9657c493e68405ef27026769cf702ee8213aa2556e3a3042568f718fa833335e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EFC 10792 bytes

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