Malicious PDF — malware analysis report

Static analysis result for SHA-256 460b9c334447a646…

MALICIOUS

PDF

76.5 KB Created: 2021-03-13 17:20:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 4721b333f5b2cfaea068181f7da46d27 SHA-1: 2ff3d57dbdfc7378e332f11bec1b1a90767d9125 SHA-256: 460b9c334447a646a6611461b7b30be3d885f12082c1dd294990c5c9276f7a3d
156 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying it as a link farm. The primary external URI points to 'dugedepap.ru', suggesting a malicious redirection or phishing attempt. While no scripts were directly extracted, the PDF structure and the presence of many external links indicate an attempt to drive traffic to potentially malicious sites, aligning with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://dugedepap.ru/strik?utm_term=what+intermolecular+forces+are+present+in+sio2 PDF link annotation
    • http://tiwigibafofovit.iblogger.org/texas_instruments_ti-30x_iis_scientific_calculator_red.pdfIn PDF document text
    • http://pubggaming.online/7249306071qjnh5.pdfIn PDF document text
    • http://copyrightshelpcenter.com/800145439664vjiz.pdfIn PDF document text
    • http://superheatbelt.xyz/how_much_does_a_gender_reassignment_surgery_costzhe8k.pdfIn PDF document text
    • http://qiwi-wallet.online/update_android_samsung_j2_primeb0u56.pdfIn PDF document text
    • http://sevastopol.sale/tewobolaxivavupxo4l.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/titugome/77253621560.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/amps_assessment_manual.pdfIn PDF document text
    • https://56db2a4d-09ce-4ff6-a558-abb1d6727cd4.filesusr.com/ugd/003b86_1e1aa1b39c684994a2eda9db6c409517.pdf?index=trueIn PDF document text
    • https://84d51d8d-5932-465a-b044-5d36dace581c.filesusr.com/ugd/98e2de_3bd3d7a934f042b8a2e311f52d58269d.pdf?index=trueIn PDF document text
    • http://rifezitivobe.epizy.com/metal_bending_machine_project_report.pdfIn PDF document text
    • http://gulujuwelowox.epizy.com/what_does_flashing_battery_light_mean_on_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/how_to_clean_torque_converter_solenoid.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/areas_of_improvement_for_performance_review.pdfIn PDF document text
    • https://33fe1336-4051-433c-b691-b763732126dd.filesusr.com/ugd/6c8f37_bd1f18edba304ea9b3d0a9a67f678965.pdf?index=trueIn PDF document text
    • https://54179944-c6a3-49b3-9462-5d1939b6aff2.filesusr.com/ugd/49f5ef_91ecd6555ea14272b9354761bb87e642.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/calendars_2020_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/12816514704.pdfIn PDF document text
    • https://s3.amazonaws.com/kewuxejikiwe/91219625011.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/jexowevamujuroroxuru.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/kizemevufokozutetuwe.pdfIn PDF document text
    • https://s3.amazonaws.com/sobaketemu/bedbug_report_toronto_hotels.pdfIn PDF document text
    • http://fofifalog.rf.gd/android_all_version_logo.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_off0000ebda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBDA 5400 bytes
SHA-256: 8de2b0747a29e89cbac9b3b4d39de5568d1b49831f506fd446013c7620e19b0f
font_01_sfnt_off0000fe20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE20 11240 bytes
SHA-256: 6918ae853ff7703ab7d6bfda884db783c01be20d222bcd1191f6776cab5cab1c

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