Malicious PDF — malware analysis report

Static analysis result for SHA-256 793845e98e5ec115…

MALICIOUS

PDF

77.6 KB Created: 2021-02-25 07:57:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 634ba573fc22dc831c3052ec36797e61 SHA-1: dc3c2d3eb9db7128fac5a61fc6a3a17b7517539c SHA-256: 793845e98e5ec11537438c307d5f66ab59d538b5b29f9ddffae250d551a7d4a3
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a site related to playing classic games on PC, likely a lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to exploit users through social engineering, potentially leading to further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/strik?utm_term=how+to+play+classic+games+on+pc PDF link annotation
    • http://physcoo.com/calendar_2020_vector_freeggttu.pdfIn PDF document text
    • http://peromopativej.mypressonline.com/how_to_mix_single_stage_auto_paint.pdfIn PDF document text
    • http://bosnoslovnoejelaniekupit.xyz/1707191258901bbb.pdfIn PDF document text
    • http://adminhalil.com/mebirazemulirelwifxn.pdfIn PDF document text
    • http://gexomafe.mypressonline.com/pharmacology_books_for_medical_students.pdfIn PDF document text
    • http://stylecurtains.com/discipline_and_punishment_the_birth_of_the_prisonys3it.pdfIn PDF document text
    • http://latuha.com/zuroberapenofuwfi0uj.pdfIn PDF document text
    • http://nejevefivi.mypressonline.com/zepowazofisexepuwebi.pdfIn PDF document text
    • http://tibetterrier.ru/war_and_peace_1966_part_1cqgqr.pdfIn PDF document text
    • http://newipufisatag.scienceontheweb.net/sketchup_pro_2018_free_for_students.pdfIn PDF document text
    • http://true-board1.club/gebisiwajejudazel6m5ph.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wexozozi.rf.gd/realtek_hd_audio_manager_missing_in_control_panel_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/zunetavefejukujam.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/mr_muscle_sink_unblocker_safety_data_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/tizoxorosogejiwiwo.pdfIn PDF document text
    • http://fasokefukolu.epizy.com/name_birthday_cake_app.pdfIn PDF document text
    • http://sazasewugekupej.onlinewebshop.net/54029625364.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/debudejilinave.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/best_online_art_history_masters_degree.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/latex_beamer_includegraphics.pdfIn PDF document text
    • http://malunazix.rf.gd/nefovusamu.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/ffxiv_leveling_guide_30-_40.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_off0000f225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF225 5312 bytes
SHA-256: 7419bbc838d0ce2ebdd500e32f08f4b2161d24601098c505d2b596bd6de15684
font_01_sfnt_off00010445.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10445 10764 bytes
SHA-256: 0352578b22a99b8890b16b96f76e3880e3989fae29598eb44400fb1b368ed482

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