Malicious PDF — malware analysis report

Static analysis result for SHA-256 30866848c72df49f…

MALICIOUS

PDF

70.6 KB Created: 2020-11-10 00:09:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: a66f10f143bce1c2f475f1c6a04e04dd SHA-1: 5b9d54755c505461345c68a6808882b4dd70c87e SHA-256: 30866848c72df49f803015761b5ab2b5c03bb030dad80a4f2e998828b462dc8d
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/123?keyword=crusaders+of+the+lost+idols+talent+build PDF link annotation
    • https://rofotemajanati.weebly.com/uploads/1/3/4/4/134497193/kupuzon_kisoto_tibifap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402250/normal_5fa9bbe1f17fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374175/normal_5f8e2d2a90c9d.pdfIn PDF document text
    • https://wojawodexof.weebly.com/uploads/1/3/4/6/134673733/5922926.pdfIn PDF document text
    • https://guxikotazo.weebly.com/uploads/1/3/4/7/134704652/7e31588f8d8d6.pdfIn PDF document text
    • https://zekasujiminog.weebly.com/uploads/1/3/4/3/134366003/tuxifugogura.pdfIn PDF document text
    • https://giwakatunu.weebly.com/uploads/1/3/1/4/131437107/woxesegela.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/700cac22-2dc3-4a80-83e3-1549333142c9/cpcc_levine_campus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e1142f6-d855-4a9e-bac3-efb6d4543333/bepabosuro.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/sweatshirt_trump_in_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ddf03de9-38aa-405c-8e51-c7f4f2f138a1/xaxusura.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ad34a23-e2ca-4361-a038-2c81f36cc5ed/7439720366.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a084137b-8328-4861-82e6-77dfe04f3dc9/27541361707.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/public_policy_and_presidential_influence_worksheet.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_off0000d647.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD647 5040 bytes
SHA-256: 517baeba1224d74736803c8fc39f597ecdc8573ea523fb4d838312cfdf1e1791
font_01_sfnt_off0000e75d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE75D 11136 bytes
SHA-256: 3f110cfc1ed6fa6815fdad2923ab89f0cd9b29dee46117c89f197bc618c534aa