Malicious PDF — malware analysis report

Static analysis result for SHA-256 b27b5b51201a3d0e…

MALICIOUS

PDF

80.4 KB Created: 2021-05-16 10:02:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: f7dd8cdbc56d0c3210521f52997fc17c SHA-1: ac86c23640510864917a03e464b31e7a25850b3b SHA-256: b27b5b51201a3d0e3917ca0a4785170fe85352a12f8767c3f9226fdd3a443ae6
126 Risk Score

Malware Insights

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

The PDF contains multiple external URIs, with a primary malicious URL identified as dugedepap.ru. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM indicates a link farm on disposable hosting, suggesting a phishing or scam attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://dugedepap.ru/strik?utm_term=how+many+calories+in+a+taco+bell+soft+taco+supreme PDF link annotation
    • http://solent.bar/do_you_have_to_buy_houses_evenly_in_monopolyt9b6v.pdfIn PDF document text
    • https://cdn.sqhk.co/dodufiruw/hgh38ha/kotedelosekil.pdfIn PDF document text
    • http://all-host.site/private_practice_season_2_episode_9_guest_starsbxmho.pdfIn PDF document text
    • https://cdn.sqhk.co/mitejapeki/mP2eijt/grim_wanderings_2_premium_apk.pdfIn PDF document text
    • http://lidlid.xyz/agnus_dei_piano_chordshksnf.pdfIn PDF document text
    • http://bcpreactiva-enlinea.com/when_should_you_change_transmission_fluid_on_2018_honda_accord0vdj0.pdfIn PDF document text
    • http://lalashoppen.online/hannah_arendt_on_revolution_chapter_2pke5y.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://1a447ccf-a6a5-490c-ad31-399ae8169532.filesusr.com/ugd/cf5184_27f9e7290e834a4d9eebb68686a9233f.pdf?index=trueIn PDF document text
    • http://virojokezof.rf.gd/15870256637.pdfIn PDF document text
    • http://zuvidetalenaras.epizy.com/android_oneplus_one.pdfIn PDF document text
    • https://0ea1ff7f-05b3-43a2-9744-178351a05ed1.filesusr.com/ugd/01f9b9_bb712eca82a843b7b78fc2abdc393b98.pdf?index=trueIn PDF document text
    • http://depebovibu.epizy.com/sarcasm_get_scared_piano_sheet_music.pdfIn PDF document text
    • http://xojasupolovoga.rf.gd/caballo_de_troya.pdfIn PDF document text
    • http://dilikibabisud.rf.gd/lisopajadifibusupimefu.pdfIn PDF document text
    • http://gozipoxux.rf.gd/lirik_lagu_bts_answer_love_myself_romanization.pdfIn PDF document text
    • http://femasusatatovet.epizy.com/britax_car_seat_infant_insert_when_to_remove.pdfIn PDF document text
    • http://jodetiwozefiso.epizy.com/fefiralaxiketotebepoxilos.pdfIn PDF document text
    • http://bejutamukedus.epizy.com/assistir_globo_reporter_ao_vivo_pela_internet.pdfIn PDF document text
    • https://8df9d1b7-8f6e-49e1-bdac-c9da4d4291fd.filesusr.com/ugd/12c198_661a7f4af2c946f393923217d6f603ea.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA75 5456 bytes
SHA-256: 2a7f8b326c358ccef61a805bf2c2b04f5a5c1b9352fef3059e19d20eab495ecb
font_01_sfnt_off0000fcf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCF4 4084 bytes
SHA-256: 9f3e01a7a22aaa8f2ef86ed09f0034dd8389d87ee9aeb82a07690c8db872c8ca
font_02_sfnt_off00010c3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C3D 11696 bytes
SHA-256: 3c83bb9246480b2dca85359033cd271fd1f25d7141b5af2d4690150817c3a2d2

Open this report in the interactive analyzer, or submit your own file for analysis.