Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b3c8d4e47ddb421…

MALICIOUS

PDF

63.2 KB Created: 2021-02-21 11:30:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: eadf64239e5fa2ffd8aa12e70d6b5211 SHA-1: ba6cd54777f24181ed97bf8c2c24f48279fdb912 SHA-256: 9b3c8d4e47ddb4210699d3e46f45dee8ce170dd98530797761823aa357843623
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://jacksth.ru/aws?utm_term=2004+mercury+mountaineer+owners+manual PDF link annotation
    • https://bopugokux.weebly.com/uploads/1/3/4/9/134901566/funet.pdfIn PDF document text
    • https://mugokirupela.weebly.com/uploads/1/3/2/6/132681863/453e05.pdfIn PDF document text
    • http://cocobuka3.xyz/zomixagixomoledaxggshu.pdfIn PDF document text
    • http://zomuregunaradu.iblogger.org/bathroom_accessories_data_sheet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490720/normal_6015e7d0bbc83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366982/normal_602e760ebaf7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418788/normal_6029d2d43ea68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421615/normal_6031f84e440df.pdfIn PDF document text
    • https://zuwukozoxuwiged.weebly.com/uploads/1/3/4/7/134713444/luposijuwevezo_simor.pdfIn PDF document text
    • http://filajupixi.iblogger.org/earl_nightingale_think_and_grow_rich_summary.pdfIn PDF document text
    • https://pufenenuboz.weebly.com/uploads/1/3/0/7/130738511/lapuralesakesurevose.pdfIn PDF document text
    • https://lanoxujuzon.weebly.com/uploads/1/3/4/6/134630121/32d65a10012579.pdfIn PDF document text
    • https://roxupexuwukobeb.weebly.com/uploads/1/3/4/7/134749027/videjuzudexolokatu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jevodowe.rf.gd/devenir_programmeur_informatique_autodidacte.pdfIn PDF document text
    • https://s3.amazonaws.com/godewumazek/birds_pictures_for_colouring.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_off0000bc7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC7E 5408 bytes
SHA-256: 94228dc82a1bf8d9b0828dbf475d6d47b9f2f590cb8c9763e22fc436fdb354af
font_01_sfnt_off0000cee4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEE4 9716 bytes
SHA-256: e322fc5e1fa2e1aae568d136dc2ba2b512b5729ebdae417dc6e54444447d5928