Malicious PDF — malware analysis report

Static analysis result for SHA-256 e03cc103c72cdb21…

MALICIOUS

PDF

81.0 KB Created: 2021-03-19 22:20:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 96945d22a6239ef1405b509b11164a6a SHA-1: 2a2767a1bd10daa4940ed3e62f00e94e23cd66dc SHA-256: e03cc103c72cdb216ac028fc287dda8600992ba540f9af6e085862b2e46802aa
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external URIs, many hosted on disposable domains, suggesting a link farm designed to redirect users. The primary malicious URL identified is https://jumiwimov.ru/strik?utm_term=husqvarna+riding+lawn+mower+cover, which likely serves as a lure or a distribution point for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://jumiwimov.ru/strik?utm_term=husqvarna+riding+lawn+mower+cover PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421476/normal_6025970bf3d9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383314/normal_5fd13c0023568.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490367/normal_604fab90aa3ce.pdfIn PDF document text
    • https://cdn.sqhk.co/vexorikodo/fhjicPP/teri_akhiyon_ka_yo_kajal_video.pdfIn PDF document text
    • http://verifiedbadge-lnstagram.com/2014_fifa_world_cup_brazil_ps3_downloady694w.pdfIn PDF document text
    • https://cdn.sqhk.co/ligumorik/9idF7xQ/hachiko_english_movie_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445743/normal_5fe8fbbb825b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445743/normal_600a3e5420945.pdfIn PDF document text
    • https://cdn.sqhk.co/zapusukajev/wIfjd4f/lisulesetibopokupemijaxow.pdfIn PDF document text
    • https://cdn.sqhk.co/niramojiga/jijiiar/moviestarplanet_2_login_online.pdfIn PDF document text
    • http://csxmoney.info/35438267723wukkd.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/eaa2fd08-79d5-4f64-b5e8-5451e41c340e/40515324943.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c28b747a-8487-4310-8aef-85e7288a6843/27198638844.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/80162465210.pdfIn PDF document text
    • http://bimumebuzof.epizy.com/when_is_the_best_time_to_enter_a_trade_in_forex.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/caesar_video_game.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bd02feb-67d7-4484-93d9-81d3dbbeab91/kegaju.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/full_form_of_india_given_by_britishers.pdfIn PDF document text
    • http://zaxalamel.rf.gd/fefivafevewevemixuxapubo.pdfIn PDF document text
    • http://xedekig.rf.gd/research_conceptual_framework_template.pdfIn PDF document text
    • http://woxowezev.rf.gd/savotuliw.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_off0000ffa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA5 5496 bytes
SHA-256: 12cbbde6b8115b1f52f200dd91fea54827c3374e47cf80d40853b335dd04904d
font_01_sfnt_off00011250.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11250 10676 bytes
SHA-256: cf6e70774c4a4e887543bedfaaea997df223382f2a30abc12aa04b019e3cb506

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