Malicious PDF — malware analysis report

Static analysis result for SHA-256 1466a4be0d9bfd32…

MALICIOUS

PDF

42.9 KB Created: 2020-10-11 22:09:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: fea0a2a2feb236013f7890ef6c8be465 SHA-1: 80dd4b806ac98f4513ba77a788cd371b375d5e17 SHA-256: 1466a4be0d9bfd321c53c9e654987cf78be347dfd36076a3dda24d5273bfccb5
124 Risk Score

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 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://ttraff.club/pify?keyword=modern+digital+and+analog+communication+systems+pdf+free+download In PDF document text
    • https://site-1041695.mozfiles.com/files/1041695/mumonitiburanijerajikolan.pdfIn PDF document text
    • https://site-1040506.mozfiles.com/files/1040506/5587525636.pdfIn PDF document text
    • https://site-1037098.mozfiles.com/files/1037098/19316876949.pdfIn PDF document text
    • https://site-1036753.mozfiles.com/files/1036753/69514271700.pdfIn PDF document text
    • https://site-1048190.mozfiles.com/files/1048190/nufelife.pdfIn PDF document text
    • http://jipibuv.dysonundergraduatecouncil.org/uploads/1/3/0/7/130776493/483b15a71f.pdfIn PDF document text
    • http://kusimexow.wolfgangcarstens.com/uploads/1/3/1/8/131871787/worow.pdfIn PDF document text
    • http://werob.annawilliamsweb.com/uploads/1/3/1/4/131483027/44aaa54006d6389.pdfIn PDF document text
    • http://files.christiancagigal.com/uploads/1/3/2/3/132303071/vuvoj_tipikinafiguv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5334f3a2-e575-49aa-8fd0-b091360c4200/77597114181.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34a93dad-4255-4ccd-8166-d7a5733914ed/fazuporadotonudekifo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ace4989-bf5c-4889-83cc-2fb2880466ce/40573804326.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32632bd3-7c4c-4ebd-9d42-75546b65f74c/9051755078.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_off00006978.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6978 5676 bytes
SHA-256: 8cee7964928181d1d530a69794748080692eb7f4b6ca8940bee442ea76743214
font_01_sfnt_off00007ccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CCF 9880 bytes
SHA-256: 0946be68698e8384d0963799fe8ef720f8ba4f9f6b86cad3eb1de6ae1d14d39e

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