Malicious PDF — malware analysis report

Static analysis result for SHA-256 02e400b8e6a9c000…

MALICIOUS

PDF

78.4 KB Created: 2021-03-25 13:00:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 96de7d034d55fd96fb0e99adef8a173e SHA-1: 09ae227e35bfb72d485264742fbc1fbd6ab4c6f3 SHA-256: 02e400b8e6a9c000f5210d7b79669cbda69b7af2c18377360a8f7c28fcbcd75a
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous external links, many of which are hosted on disposable domains and appear to be part of a link farm. The primary malicious URL, vilenefex.ru, is associated with a lure for 'gerald's game full movie in hindi free download', suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://vilenefex.ru/strik?utm_term=gerald%2527s+game+full+movie+in+hindi+free+download PDF link annotation
    • https://wamazuwo.weebly.com/uploads/1/3/1/3/131380988/wemewogab-mademasidediv.pdfIn PDF document text
    • http://peluxuba.sportsontheweb.net/bomabamudo.pdfIn PDF document text
    • https://zexaloguf.weebly.com/uploads/1/3/4/5/134576330/412072.pdfIn PDF document text
    • https://nijuvijoz.weebly.com/uploads/1/3/1/4/131408832/1412300.pdfIn PDF document text
    • http://labifovejes.mypressonline.com/where_is_the_oil_filter_on_a_troy_bilt_pony.pdfIn PDF document text
    • http://xepuxupipe.mywebcommunity.org/55990580329.pdfIn PDF document text
    • https://limisakaxenit.weebly.com/uploads/1/3/4/3/134371081/d3e24861922971d.pdfIn PDF document text
    • http://vivekawiga.sportsontheweb.net/rinufare.pdfIn PDF document text
    • http://punavuvipufov.sportsontheweb.net/79566199902.pdfIn PDF document text
    • https://nakuzimatixibo.weebly.com/uploads/1/3/5/3/135388853/9d8d8de82dc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kedixiravupit.epizy.com/bhojpuri_video_hd_dj_wala.pdfIn PDF document text
    • http://siwemoxoxawevuv.atwebpages.com/grade_4_grammar_lessons.pdfIn PDF document text
    • https://s3.amazonaws.com/luworizesupox/5012685052.pdfIn PDF document text
    • http://siniligavaxuvul.onlinewebshop.net/munkres_topology_solutions_section_20.pdfIn PDF document text
    • http://jovulotako.rf.gd/93655779966.pdfIn PDF document text
    • http://kizosala.epizy.com/39755939815.pdfIn PDF document text
    • http://zejusamipokera.myartsonline.com/auto_mechanics_fundamentals.pdfIn PDF document text
    • http://vovakupalujum.onlinewebshop.net/40374599594.pdfIn PDF document text
    • https://s3.amazonaws.com/xelimewat/the_sorcerers_apprentice_movie_song_list.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/terjemahan_kitab_bidayatul_mujtahid.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_off0000f4e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4E8 5540 bytes
SHA-256: c3e30c5d1e97e0f6a10e98996b1dd4017fe862932e97061780b3ef5ff0759a1d
font_01_sfnt_off000107b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107B1 10628 bytes
SHA-256: 0ea7e97308a7cc2d21474cf4564a203abbe4ba80f01469272fb37c7ff64cb1a6

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