Malicious PDF — malware analysis report

Static analysis result for SHA-256 e36544326a1c5693…

MALICIOUS

PDF

80.8 KB Created: 2021-04-23 16:21:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 9bef56de1aa809d28cd3998d833e27aa SHA-1: b1571acb4fd74cea1f7529bb4dc87ec42a095432 SHA-256: e36544326a1c569330f21c7a4f9a1b0a23f212720ca48340f14a125db7b8f04d
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable domains and are flagged as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and URL patterns suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://bologen.ru/strik?utm_term=marlin+glenfield+60+scope+mount PDF link annotation
    • http://dirozigumifew.scienceontheweb.net/biochemistry_and_clinical_pathology_book.pdfIn PDF document text
    • http://vivuvulefova.iblogger.org/aashiqui_3_full_movie_free.pdfIn PDF document text
    • http://viwafuxofiseko.getenjoyment.net/antrenmanlarla_geometri_2._kitap.pdfIn PDF document text
    • http://torevifij.iblogger.org/south_park_game_boy_color_rom.pdfIn PDF document text
    • http://naturwows.space/rocket_sky_game_mod_apkmsi89.pdfIn PDF document text
    • http://gaturemani.22web.org/ny_times_crossword_answers_today.pdfIn PDF document text
    • http://rumigiwataj.getenjoyment.net/walurof.pdfIn PDF document text
    • http://pusatokolerax.mywebcommunity.org/rpf_constable_ancillary_notification.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://kuxomexepus.epizy.com/delopitudofuvizijapir.pdfIn PDF document text
    • http://gofeneneju.rf.gd/dozokabofirokorozuvewuti.pdfIn PDF document text
    • http://birifamabaxum.rf.gd/sonikesafeduzonipigenamu.pdfIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/ignou_b._ed_registration_form_2019.pdfIn PDF document text
    • http://netuvorib.epizy.com/old_age_simone_de_beauvoir.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/nhp_auto_off_manual_switch.pdfIn PDF document text
    • http://sogefotatuledis.epizy.com/26173525623.pdfIn PDF document text
    • http://sogivuwe.onlinewebshop.net/wiboremitasapototuviro.pdfIn PDF document text
    • http://bosolijivox.rf.gd/7512566922.pdfIn PDF document text
    • http://jubadoloje.epizy.com/wiloxegidetot.pdfIn PDF document text
    • http://febatejo.rf.gd/50519244574.pdfIn PDF document text
    • http://palulofegag.rf.gd/56957807213.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/36108762052.pdfIn PDF document text
    • https://s3.amazonaws.com/tobito/history_of_polymerase_chain_reaction.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/jaxat.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF020 5656 bytes
SHA-256: 993664cddd750cd97b50671613c5ddf1181e81b3de0d7273d89cc550fcf38ad2
font_01_sfnt_off0001033c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1033C 10524 bytes
SHA-256: 4359b85161f39ace7ceab42e669a11dcd96e54f3ba17bf11fc201aa2c3e2905a
font_02_sfnt_off00012761.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12761 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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