Malicious PDF — malware analysis report

Static analysis result for SHA-256 33cc38c417b6659d…

MALICIOUS

PDF

82.1 KB Created: 2021-03-16 23:54:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 346b79b2810b25945bc28a0112f62f55 SHA-1: 014763041d9d98ffc569399a6c09cfea8d701ff7 SHA-256: 33cc38c417b6659db1ef8f67b7cfb22755b519960a6a59389d86f890193a976f
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. The document body, though heavily obfuscated, contains references to reporting domestic violence and includes numerous links to disposable hosting domains, suggesting a phishing or credential harvesting attempt. The presence of external URIs and a link farm indicates the likely intent to redirect users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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/123?utm_term=reporting+domestic+violence+south+australia PDF link annotation
    • http://vuroxinizona.scienceontheweb.net/jawagebukosuj.pdfIn PDF document text
    • https://bitilidejiv.weebly.com/uploads/1/3/4/4/134442737/vimafavava_wozedominu_sibaxitiketun_pufujimur.pdfIn PDF document text
    • https://tanibabinilez.weebly.com/uploads/1/3/4/0/134018029/pujikebefar-sokuviwilujez-jaravaratawes-lexaf.pdfIn PDF document text
    • http://rijexofugovu.medianewsonline.com/buvenigadakogi.pdfIn PDF document text
    • https://durirumis.weebly.com/uploads/1/3/3/9/133999752/sepodor.pdfIn PDF document text
    • https://lixebofupasiwik.weebly.com/uploads/1/3/2/3/132303312/gijeta.pdfIn PDF document text
    • https://bitujidup.weebly.com/uploads/1/3/4/5/134598072/6405004.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446162/normal_6008c02f5a4be.pdfIn PDF document text
    • http://patagoxipu.iblogger.org/74466787098.pdfIn PDF document text
    • http://jotepuxigavof.iblogger.org/lusida.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367640/normal_603076a20f944.pdfIn PDF document text
    • https://jopakawinotu.weebly.com/uploads/1/3/1/4/131407654/zabopati_vovik_jixuv.pdfIn PDF document text
    • http://kakigomumarob.22web.org/auditoria_forense_libro.pdfIn PDF document text
    • http://xufededubumavif.scienceontheweb.net/maze_runner_3_google_drive.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368503/normal_5fe71524d1bc8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417818/normal_604988e813446.pdfIn PDF document text
    • https://bexejasofipa.weebly.com/uploads/1/3/1/3/131397997/giridagekovasi_rababanubuz.pdfIn PDF document text
    • https://vadururufuwowo.weebly.com/uploads/1/3/4/5/134581676/453fbf38.pdfIn PDF document text
    • https://koludoselutak.weebly.com/uploads/1/3/4/8/134893798/ed5fb8f9950.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vuxifonodine.epizy.com/80147541008.pdfIn PDF document text
    • http://bubanav.epizy.com/dapowopemefapax.pdfIn PDF document text
    • http://dukazel.rf.gd/bldc_motor_principle.pdfIn PDF document text
    • http://tujupifirafadus.myartsonline.com/pokemon_fire_red_cheats_-_gameshark_codes_game_boy_advance.pdfIn PDF document text
    • http://fefasowuri.rf.gd/hp_officejet_pro_8610_paper_feed_problem.pdfIn PDF document text
    • http://dizodufuxot.rf.gd/tutajafonel.pdfIn PDF document text
    • http://newemepakirid.myartsonline.com/augusto_ghio_ingles_basico_descargar.pdfIn PDF document text
    • http://fasemejatafa.rf.gd/nepemob.pdfIn PDF document text
    • http://xaxotuk.epizy.com/bolens_lawn_tractor_38.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_off00010323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10323 5552 bytes
SHA-256: 25ccc6af4899f96a7a31cbca067e3a47f1253adab8ff610a0f6746d15e760815
font_01_sfnt_off000115ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115EA 10740 bytes
SHA-256: de38ebc56835ef2e9f640a036e17e3b9d26db438d2050f0bade9b8aa78988af9