Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dc7eccc27bed89f…

MALICIOUS

PDF

66.8 KB Created: 2021-02-24 21:03:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0dce161b2451144c874d7329347dffa5 SHA-1: 3ae2733f43a8844fecba99d022a91a2aa7ae500c SHA-256: 2dc7eccc27bed89f2bb58fff06a00aa800d33d1b268014a8b9ab99164599a3b5
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://crophysi.ru/award?keyword=a+simple+favour+trailer+ita In PDF document text
    • https://cdn.sqhk.co/wanaxowuwot/jghjgib/car_racing_simulator_2015_cheat.pdfIn PDF document text
    • https://vuwawirekexaz.weebly.com/uploads/1/3/0/9/130969699/patewikexemarif.pdfIn PDF document text
    • https://gotedimonov.weebly.com/uploads/1/3/4/7/134761190/3936567.pdfIn PDF document text
    • https://gamajebijapam.weebly.com/uploads/1/3/1/8/131856653/tosaravoka.pdfIn PDF document text
    • http://raguvigawak.mypressonline.com/dofiwokijigufefixapison.pdfIn PDF document text
    • http://wifunagidoli.mypressonline.com/58623995433.pdfIn PDF document text
    • https://zuxijonimobazi.weebly.com/uploads/1/3/5/3/135351106/nizemuxesib.pdfIn PDF document text
    • https://cdn.sqhk.co/korulifesewa/icvhbWL/waverejozipovetedux.pdfIn PDF document text
    • http://kakafeg.scienceontheweb.net/vapup.pdfIn PDF document text
    • https://ruwijupoxotafan.weebly.com/uploads/1/3/0/8/130814308/1dc7f.pdfIn PDF document text
    • http://mosebuzixat.mywebcommunity.org/kugupekuvajibidedis.pdfIn PDF document text
    • https://javedaxefu.weebly.com/uploads/1/3/5/3/135314095/wevog.pdfIn PDF document text
    • https://lekomitigukajar.weebly.com/uploads/1/3/5/3/135345412/minopizite.pdfIn PDF document text
    • https://diwowure.weebly.com/uploads/1/3/4/5/134592565/gebatokipifazezoka.pdfIn PDF document text
    • http://punejew.mygamesonline.org/84184466196.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/zVAgfhb/82172441865.pdfIn PDF document text
    • https://semizafug.weebly.com/uploads/1/3/1/8/131871859/3657500.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jeborawaleko.atwebpages.com/65350816353.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_off0000c9dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9DC 5096 bytes
SHA-256: 76d1d033870d92aed8f1ddd85a50969b009f86add14254275c9bb95d5500d93b
font_01_sfnt_off0000db25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB25 10304 bytes
SHA-256: 46f75243b0031d0b1aae776a134c76a897770574752a87a0771716f29a34b149

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