Malicious PDF — malware analysis report

Static analysis result for SHA-256 c663b29518f49425…

MALICIOUS

PDF

45.6 KB Created: 2020-10-09 05:16:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0fcf91899fcb72e67ebe4be687737acc SHA-1: 8d89a309ed21b7b8a73f9cb6fa843e5b5152a932 SHA-256: c663b29518f4942591b1be591c60c7bcfd64acfa757940438fa033667f8b9567
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://cctraff.ru/pify?keyword=reddit+ncaa+wrestling+streams In PDF document text
    • http://mabamume.blackrosesdartscharity.com/uploads/1/3/2/3/132302987/2f4ce.pdfIn PDF document text
    • http://files.atayloredapproach.com/uploads/1/3/1/6/131636728/wijuwe-nobawojemaki-wilofogagot.pdfIn PDF document text
    • http://files.sebastienlavoue.net/uploads/1/3/1/0/131070646/5339856.pdfIn PDF document text
    • http://wopube.dslvnjny.com/uploads/1/3/2/6/132696056/18b0ff5.pdfIn PDF document text
    • https://site-1038611.mozfiles.com/files/1038611/joxilagutupofexusutavuf.pdfIn PDF document text
    • https://site-1040663.mozfiles.com/files/1040663/bavufegedigadekigibid.pdfIn PDF document text
    • https://site-1037203.mozfiles.com/files/1037203/xopavagitumefev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/9271924f-0bd9-407c-8d08-093753794c8f/30009649808.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92cef787-8eb9-4fa9-ab0c-8a393229a181/sukazimobozogumajup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ceb74677-0a71-473b-abf0-700b28411a12/42937261848.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4baf5489-d620-48e7-9067-eb92a49c8e64/20507595532.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06db7faf-c7ce-4a40-8d16-9ae730d4adf1/toliza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/390b395c-9f9c-41d6-a245-01a0d0456f93/kuboxefolegadawogumo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46a5fb4b-3b65-4c49-86c5-d3304dad916c/89010333985.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3731abcf-2748-4509-8e8a-b70b4c6e2583/35805896419.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61EF 5036 bytes
SHA-256: cf6fcb6c195ccb45e88d380705c3d36e2792bfd3e687a4449cef34f993001a40
font_01_sfnt_off00007300.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7300 12260 bytes
SHA-256: 46edde1d88ba47cccfd6dbd696c334d0552c23829f71b19f4a30086a07a2949b
font_02_sfnt_off00009b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B04 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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