Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ad42d1d2055155d…

MALICIOUS

PDF

67.5 KB Created: 2021-03-06 11:23:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: b1dda37fa3923a6d11736558987ffe8b SHA-1: da10d68cb5e7daa3b971813960825d4e425cded0 SHA-256: 0ad42d1d2055155d5f0c190df44fc9baa61187bf44e781f9b2f05f37e6525410
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a primary focus on 'https://xajibur.ru/wix?keyword=newest+movies+hd+2.4+apkpure'. Heuristics indicate this PDF is a link farm hosted on disposable domains, suggesting a malicious intent to redirect users to potentially harmful content. The ML classifier and ClamAV detection strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://xajibur.ru/wix?keyword=newest+movies+hd+2.4+apkpure PDF link annotation
    • http://dujivodawalaxu.22web.org/nemos.pdfIn PDF document text
    • http://pixidilivutep.medianewsonline.com/zonizokobafezunotopizufum.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366036/normal_5ff279c5d8b30.pdfIn PDF document text
    • https://jisevudes.weebly.com/uploads/1/3/4/8/134882916/64551388ea.pdfIn PDF document text
    • http://fodekofuxuvum.sportsontheweb.net/parts_of_speech_quiz_9th_grade.pdfIn PDF document text
    • http://xawegap.mywebcommunity.org/rodonokosuzuxabutumusori.pdfIn PDF document text
    • http://lunagogafoxoj.sportsontheweb.net/44902621879.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404121/normal_5fdc483483234.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498997/normal_6033c0f1da822.pdfIn PDF document text
    • https://kigodobegolalib.weebly.com/uploads/1/3/1/4/131453325/2ba2c9d64730.pdfIn PDF document text
    • http://gemofesane.medianewsonline.com/30456888228.pdfIn PDF document text
    • http://foxiduwanati.mygamesonline.org/netgear_wnr2000_setup_as_switch.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389793/normal_5ffd0a0ad7962.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454432/normal_5fc7e7fe753f9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/93316009295.pdfIn PDF document text
    • http://joxelugokolutu.rf.gd/animation_composer_full_pack_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/ultrasound_guided_needle_biopsy_liver.pdfIn PDF document text
    • http://dezobod.onlinewebshop.net/teacher_created_resources_coupon_august_2019.pdfIn PDF document text
    • http://medexode.atwebpages.com/whats_the_best_drink_to_mix_with_crown_royal.pdfIn PDF document text
    • http://jovukanuwu.rf.gd/wirexavunapa.pdfIn PDF document text
    • http://koxolavomuzo.myartsonline.com/33794887222.pdfIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/adobe_indesign_2017_trial.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/zemidujegujo.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_off0000cba3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBA3 5604 bytes
SHA-256: f7e6618b5ed98d8a14c615682d2a879a914bcee73ee363436463a06f262a33f8
font_01_sfnt_off0000dead.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEAD 9948 bytes
SHA-256: 3699890729864ef5140aec02ac0190a98078277e609b18b7b3de3c0cc5d69565

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