Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d7dbe97acff16e6…

MALICIOUS

PDF

70.0 KB Created: 2021-02-02 18:41:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 824c71d8d5b145b3f92a049530f569fe SHA-1: 3c636734377e7352bb4cfbeb631f0a54e70cb44e SHA-256: 9d7dbe97acff16e6d684d173c829c2e5a3235831bf3026d765477c7a1d9e2792
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wb?keyword=beetroot%20powder%20nutrition%20information PDF link annotation
    • https://cdn.sqhk.co/jivaduzar/Bihco1H/zig_zag_stripe_discount.pdfIn PDF document text
    • http://characduwe.space/15670006909lv7a3.pdfIn PDF document text
    • https://mubasaji.weebly.com/uploads/1/3/4/8/134846322/2338461.pdfIn PDF document text
    • https://butadagawonor.weebly.com/uploads/1/3/1/0/131070306/caed8df.pdfIn PDF document text
    • https://wewodagib.weebly.com/uploads/1/3/4/2/134266566/tunesano_xelagoga.pdfIn PDF document text
    • https://juputifewusa.weebly.com/uploads/1/3/4/4/134435955/wigitezuvut-fovowal-bedifulasimorok.pdfIn PDF document text
    • https://gotedimonov.weebly.com/uploads/1/3/4/7/134761190/5975615.pdfIn PDF document text
    • http://nicepics.xyz/simple_accounting_procedures_manualkskrj.pdfIn PDF document text
    • http://buyfastedcircle.xyz/zetajapujaguwaderega3rh17.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nakewifowid.rf.gd/87953499533.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/texademodefonofom.pdfIn PDF document text
    • http://worubag.epizy.com/67732294927.pdfIn PDF document text
    • http://lajuloverebob.epizy.com/gifoturobenijudugipuv.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/roxetunuwoguzuvimimeba.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/maths_teacher_interview_questions_and_answers.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_off0000d548.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD548 5116 bytes
SHA-256: 25dd255b47c84932836c0c87ff69617f080edf229e764124d5f86d7a6ccbdab5
font_01_sfnt_off0000e6b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B1 10728 bytes
SHA-256: eab0c5774e58bfec6c62b71d744a006518d606fa27dfabb11bf2e34d9b929154