Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce27140c383ea334…

MALICIOUS

PDF

76.4 KB Created: 2021-04-05 16:08:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: e4e989fbc019b0d0f13e3bd7268f4b6e SHA-1: 16b9564e912a1b3d93d14eb882cbbd8b8a36b9c0 SHA-256: ce27140c383ea334eb3154b83db36a11aa2bfa922a0307d3f103ccdfb4ac9ee8
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document is designed to host multiple links on disposable domains, likely to obscure malicious destinations. The embedded URL 'https://lozipotod.ru/award?keyword=south+american+countries+map+pdf' is the primary indicator of a phishing or malware distribution attempt, disguised as a map document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://lozipotod.ru/award?keyword=south+american+countries+map+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4473049/normal_6001017e342bd.pdfIn PDF document text
    • https://sovivagigeb.weebly.com/uploads/1/3/5/2/135296454/muwemis.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470982/normal_5febf8d0a592b.pdfIn PDF document text
    • http://mafuditovu.iblogger.org/applied_science_for_diploma_in_karnataka.pdfIn PDF document text
    • https://fujokexa.weebly.com/uploads/1/3/5/3/135304253/fuwujugezozin.pdfIn PDF document text
    • http://zipemefud.22web.org/davukomedusug.pdfIn PDF document text
    • https://rizomoxus.weebly.com/uploads/1/3/4/5/134589692/1ff32c773.pdfIn PDF document text
    • https://vosanuxavuzom.weebly.com/uploads/1/3/6/0/136089669/8736271.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tijunejo.epizy.com/on_my_way_pubg_song_ringtone.pdfIn PDF document text
    • http://lometazojubusi.rf.gd/tree_network_topology.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/classified_bo4_shield_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3269181d-63d6-4974-bc03-e53c4da2d198/how_to_program_bose_remote_to_directv_box.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/48095074259.pdfIn PDF document text
    • http://voronuxo.epizy.com/pafixavex.pdfIn PDF document text
    • http://vimodamugirad.rf.gd/dejosinotatovafemutonefab.pdfIn PDF document text
    • http://nejedezaxusav.rf.gd/jogigadugabusanufog.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/zofunabisomutinugiwizewer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/051dc03c-d346-4b6b-8efe-995ae708d29b/easy_piano_sheet_music_for_beginners_happy_birthday.pdfIn PDF document text
    • http://tewederukafolez.rf.gd/aprendizaje_activo_silberman.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/masujokupogolesi.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_off0000ecd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD2 5464 bytes
SHA-256: a99800ec63a9ad72f162dd858a4bd4be96fc9be097c78baa9df745fc1101807d
font_01_sfnt_off0000ff3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF3F 11168 bytes
SHA-256: da80a5607e4c83047fd0cc9f9a819b9a6bcac16af960297af05b31c134936029

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