Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f090a9e08090851…

MALICIOUS

PDF

76.0 KB Created: 2021-03-19 11:09:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c680771aa88ca00121efe352892ca382 SHA-1: 694373cbfe638a3f816ef9fd21e152c7a9e8826c SHA-256: 9f090a9e0809085136df471d2e4e4dd9ba0b4515dac96c79ec1da544c7f90e81
96 Risk Score

Malware Insights

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

The PDF contains embedded URLs, one of which, 'https://dafemum.ru/strik?utm_term=versa+lite+vs+versa+2+size', is flagged as a potential phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://dafemum.ru/strik?utm_term=versa+lite+vs+versa+2+size
    • https://cdn.sqhk.co/kirovuwuvo/TEjdgcp/stick_super_fight_hack_yeuapk.pdf
    • http://vowufijetapiko.sportsontheweb.net/schaeffler_rolling_bearings_catalogue.pdf
    • https://logomeso.weebly.com/uploads/1/3/1/4/131438572/01fb45d9.pdf
    • https://mutikotamibe.weebly.com/uploads/1/3/0/8/130874320/8995481.pdf
    • https://cdn.sqhk.co/jiluputumusi/gdtvpAO/stickman_backflip_killer_5_hack_download.pdf
    • https://doxorovovo.weebly.com/uploads/1/3/4/4/134479089/934240.pdf
    • http://muluwusive.22web.org/beyonce_crazy_in_love_mp4_free.pdf
    • http://veselutut.mywebcommunity.org/nopewapewuxu.pdf
    • http://juzagunugix.iblogger.org/how_to_meet_inquisitormaster.pdf
    • https://cdn.sqhk.co/lanumakefu/gdifsic/basketball_world_championship_winners_list.pdf
    • http://kopalirigel.mypressonline.com/first_angle_projection_and_third_angle_projection.pdf
    • http://sizegoduxuxa.mygamesonline.org/java_ee_spring_tutorial.pdf
    • http://zuvowizetigeko.22web.org/yoma_strategic_holdings_annual_report.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/0c159fa9-4c57-40da-8076-59134c20186a/nilulevawezejalubibas.pdf
    • http://fojakosi.atwebpages.com/78873307044.pdf
    • http://zidojupilazado.rf.gd/duxugilufalumenominu.pdf
    • https://uploads.strikinglycdn.com/files/01cf46bd-6407-4873-961b-ec6af7add15f/haiku_worksheet_3rd_grade.pdf
    • http://jalebuvubo.myartsonline.com/mozuxareba.pdf
    • http://rakemexovujepez.epizy.com/figuvogag.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_off0000eeda.bin
9c0c0da6bc48c1e7a6484b158a9088aa331c09381d4c1ed9f3c1650924807c70
pdf-font-stream PDF embedded font (sfnt) at offset 0xEEDA 4884 bytes
font_01_sfnt_off0000ff91.bin
f73cea3e6af3f13963eea19dc1912d11e3807642da8277498e30a3f9417f746f
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF91 10300 bytes