Malicious PDF — malware analysis report

Static analysis result for SHA-256 4193d8504ea66203…

MALICIOUS

PDF

78.5 KB Created: 2021-04-16 01:35:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 33ede5ec309409c0921b805e015c5832 SHA-1: 9c1a14e00d93ca7b51f194ad9df566c660333d74 SHA-256: 4193d8504ea66203a5f101887ab55db625173033444a754939c8151c4a418461
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to car maintenance, directing the user to a suspicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=how+to+reset+maintenance+light+2013+toyota+prius+c
    • http://idealica-italy.site/wevasunenasokogibabulitoxdlfg.pdf
    • http://ru-1.casa/what_is_the_deeper_meaning_of_romeo_and_juliet5sh12.pdf
    • https://cdn.sqhk.co/vazoguzo/iLX9bEw/skip_bo_card_game_online_free_no_download.pdf
    • http://lebojabufi.medianewsonline.com/mozezaxugaxubadezotut.pdf
    • http://dajobod.getenjoyment.net/english_grammar_book.pdf
    • http://forsage.pw/epic_7_equipment_guideybz3y.pdf
    • http://cleaner360.shop/fundamentals_of_engineering_drawing_warren_j._luzadder4wvqg.pdf
    • https://cdn.sqhk.co/vofonowul/lgehawk/risasuxaxuperaxus.pdf
    • https://zakoponuzu.weebly.com/uploads/1/3/5/9/135992890/rijifosuvona_sagegeloduwemal.pdf
    • https://cdn.sqhk.co/kivipemo/CFgdiND/wobokosomapodotiw.pdf
    • http://zixivudu.getenjoyment.net/78358279048.pdf
    • https://cdn.sqhk.co/wunokebewoz/dfhcrhh/26025102383.pdf
    • https://linerebe.weebly.com/uploads/1/3/0/8/130813546/8703236.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wudemexa.myartsonline.com/amoxil_875_bula.pdf
    • http://vijamutekaga.rf.gd/korewometetuvimo.pdf
    • http://wamowif.rf.gd/82701625333.pdf
    • http://burevomekevi.rf.gd/cesar_aira_la_villa.pdf
    • https://uploads.strikinglycdn.com/files/8a1fe836-af08-4f0d-a5d0-c10ce999a713/77719582579.pdf
    • http://vatezajis.rf.gd/57814392896.pdf
    • https://uploads.strikinglycdn.com/files/ef7b81a6-3a62-4c07-b56b-337336caee84/polaroid_is048_wont_turn_on.pdf
    • https://uploads.strikinglycdn.com/files/1e81733f-cb9f-439d-8df5-6b6c4fe8698f/tenergy_lipo_charger_manual.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efe9.bin
e356163c7fed7e649340474800a777cbf403efe1ea2716af830e9ba56d8e711a
pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE9 5992 bytes
font_01_sfnt_off00010438.bin
35b367284bc6939487e6526773b5735cf38b6fc756c8454e2018adb53d56de5c
pdf-font-stream PDF embedded font (sfnt) at offset 0x10438 11812 bytes