Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe178a7cecd052b4…

MALICIOUS

PDF

112.6 KB Created: 2021-03-14 21:06:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7eab3ffa19a4b294cdb09fcc71b68076 SHA-1: 4fbd630f2ace4e307261dc5b064f1eb4ea05c64e SHA-256: fe178a7cecd052b491857999b88d80750605be200ff4d8925f2b864b84697a5b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result, likely intended to trick the user into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URI suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://seumenha.ru/wix?keyword=spofford+pond+school+summer+reading
    • http://pedron.fun/prentice_hall_literature_the_british_tradition_teachers_edition90i6o.pdf
    • https://cdn-cms.f-static.net/uploads/4461525/normal_603805443ab49.pdf
    • http://nukivapoj.iblogger.org/81098204703.pdf
    • http://avto-trokot.xyz/atomic_and_molecular_physics_notesaofkn.pdf
    • http://rakukoke.22web.org/what_is_the_lightest_weight_infant_car_seat.pdf
    • https://cdn-cms.f-static.net/uploads/4451561/normal_5fdbd03ac4a01.pdf
    • http://new-volosi.ru/kelobugomuzolixzsju.pdf
    • http://strita.space/securitas_direct_verisure_manualzu1gr.pdf
    • https://cdn-cms.f-static.net/uploads/4443578/normal_5fea0f326aefb.pdf
    • http://ag-management.space/fallout_shelters_near_me523xt.pdf
    • https://static.s123-cdn-static.com/uploads/4460057/normal_5fc7b703983ca.pdf
    • https://static.s123-cdn-static.com/uploads/4448545/normal_5fed807deab6c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/firudegix/93378709403.pdf
    • https://uploads.strikinglycdn.com/files/8e527b8e-9ac6-48a6-9cc3-10d50021582d/pge_planned_power_outage_today.pdf
    • https://uploads.strikinglycdn.com/files/b350b13e-13cf-4c1f-82df-c4219a1f6d5b/fun_grammar_activities_for_college_students.pdf
    • https://uploads.strikinglycdn.com/files/adb87020-61d2-42cd-8bac-a136e6ac7a6a/is_cyberpunk_online.pdf
    • http://dejifiragilu.epizy.com/2018_fantasy_football_cheat_sheet_ppr_excel.pdf
    • https://uploads.strikinglycdn.com/files/06792134-f240-4851-a09d-18a38f65a424/hornady_progressive_reloading_press_review.pdf
    • https://s3.amazonaws.com/ponivotigegepub/cardinal_directions_worksheet_4th_grade.pdf
    • http://folalolitawos.epizy.com/29428055710.pdf
    • http://bususetut.epizy.com/deferred_tax_asset_balance_sheet_presentation.pdf
    • https://uploads.strikinglycdn.com/files/86d6fa65-05ae-4d02-9bd4-f71e901df3d9/38737263669.pdf
    • https://uploads.strikinglycdn.com/files/5c1cfe9e-a9f0-4a46-b5d2-2303385c872c/100_startups_to_watch_2019.pdf
    • https://uploads.strikinglycdn.com/files/6395ef1b-1e04-4511-a836-54280f0246b9/lavijakejedinid.pdf
    • https://uploads.strikinglycdn.com/files/a06e0cfd-412e-4d6f-90fe-16f38a2287ca/35843328026.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_off00017aac.bin
898db85a0e3db690ec1bcb1d588f6fa1206a7c4d30fa24b186b339efaf53cf3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17AAC 5672 bytes
font_01_sfnt_off00018dcb.bin
50412c25e3d81c520dfd0ed586cb25aa5d6dda1237bcedb0e60352560c90d696		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18DCB 11448 bytes

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