Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d6ff0917e033409…

MALICIOUS

PDF

48.6 KB Created: 2020-10-09 01:43:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 84dd553de9097730a0a23853eed31cb7 SHA-1: ad62bc6d78ddbf0a84ed426a0e83742337ba08d2 SHA-256: 3d6ff0917e033409ea96cc20c21991108e65ecdbcaf4862fa17ed61ef276b164
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://gettraff.ru/pify?keyword=stats+table+d In PDF document text
    • https://site-1042286.mozfiles.com/files/1042286/67053476291.pdfIn PDF document text
    • https://site-1039491.mozfiles.com/files/1039491/segejepesipuvuvojoxi.pdfIn PDF document text
    • https://site-1039549.mozfiles.com/files/1039549/demesewoxeredoxizefifa.pdfIn PDF document text
    • https://site-1036930.mozfiles.com/files/1036930/kelidibotufope.pdfIn PDF document text
    • http://files.carelebeads.com/uploads/1/3/1/3/131381166/9794541.pdfIn PDF document text
    • http://mezixuzer.rolhamilton.org/uploads/1/3/0/9/130969699/bojot-lakurat.pdfIn PDF document text
    • http://files.elizabethgow.com/uploads/1/3/1/4/131437724/wiwivibifasaniwexube.pdfIn PDF document text
    • http://jufokem.sakanienglishcoach.com/uploads/1/3/1/4/131437089/3c052f4f47c9.pdfIn PDF document text
    • http://files.kylavender.com/uploads/1/3/0/7/130775782/1435bd.pdfIn PDF document text
    • http://files.xinwenengineering.com/uploads/1/3/0/7/130739705/915844.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9872/4770/files/download_beetalk_apk_3.0.8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4096/3751/files/joxuxex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/7308/0996/files/2_step_launch_control_diesel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/4925/4817/files/hamlet_speak_the_speech_translation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3867/6894/files/18_wheeler_3_unblocked_games.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C58 4964 bytes
SHA-256: c4135aa042af42ec11c5fb69acb4899a511318826b7ba0b45c0e3b3d26fd90af
font_01_sfnt_off00008d3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D3D 12548 bytes
SHA-256: e0effd30548da2a290b1eaae5b17f2525fa98f34f58e98f6e41dfa108a2878b8

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