Malicious PDF — malware analysis report

Static analysis result for SHA-256 7556341719fdc966…

MALICIOUS

PDF

105.5 KB Created: 2021-03-09 14:36:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: bc9c77f5dde092cf1a827860e1f698e5 SHA-1: 363db44e4b3c6ffca38634742213c385fbfcfe9f SHA-256: 7556341719fdc966e84c895311d6688691b74d3ef95184060e4ae25371e630ce
124 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely a phishing lure. The document body, though heavily obfuscated, suggests a search result context. The presence of PDF-specific heuristics and the ML classifier's flagging indicate malicious intent, likely to redirect users to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5207

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
  • 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
  • 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://fokemale.ru/award?keyword=surat+yasin+dan+tahlil+arab+pdf PDF link annotation
    • https://darurirajilubi.weebly.com/uploads/1/3/4/3/134318819/93c7042938ca4.pdfIn PDF document text
    • http://my-favshop.online/dashboard_reporting_templates_excelckiqs.pdfIn PDF document text
    • https://vimavopama.weebly.com/uploads/1/3/4/7/134769365/kizudumejofenal-xewutebokuwujos-zulojaxenitivi.pdfIn PDF document text
    • http://ijmalan.xyz/diagnostic_assessment_in_education5hpux.pdfIn PDF document text
    • http://cardioactiveuficiale.site/dinedulepomodixidafhtzsx.pdfIn PDF document text
    • http://interbank.link/madden_mobile_hacks_iosfw1rb.pdfIn PDF document text
    • https://teligodinawam.weebly.com/uploads/1/3/4/4/134457670/2381556.pdfIn PDF document text
    • http://haustova.com/saxedigajepufapokabatawixh7d4.pdfIn PDF document text
    • http://eurofamily.pro/hp_designjet_500_driver_windows_10_64_bit3npze.pdfIn PDF document text
    • http://prostosite.site/cuanto_vale_un_milimetro_en_centimetroscootr.pdfIn PDF document text
    • http://testersairf.xyz/633792403913pv8g.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://737c154f-ca75-4484-807d-9d5c19d76377.filesusr.com/ugd/7e84b7_0b31ab5a2225493f82ed5be719d68b93.pdf?index=trueIn PDF document text
    • https://b54663a3-ff9d-4122-b75c-69b71428c9b0.filesusr.com/ugd/cfa91a_2335289c776b499fa00193f9e6dd6747.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/muxegeza/20209340153.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a945e54-3b1b-4405-8a29-aa3d9b142189/52005217037.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/lesson_plan_template_primary_school_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afc44c9c-d531-4102-a17e-990462f3b2de/ketogepivo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5593b107-3828-48fc-a7c0-249110dbcfb5/22258582449.pdfIn PDF document text
    • https://s3.amazonaws.com/zagubip/56718256005.pdfIn PDF document text
    • https://e20d271a-53e3-41f9-9180-d6cd5f9fd148.filesusr.com/ugd/6cfc61_38bc46f152f14e6a968a6b29e630e109.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/80f3e3f9-d8fa-4adf-9003-42a8e95f3d44/fuduvumo.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/warerixiganipejuvojefa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32e4d988-bdb4-4d3c-9c48-76424b2bb0b2/sozitewavutorura.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/82351239395.pdfIn 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_off000184ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x184EC 3104 bytes
SHA-256: 7935a9011d1ddf925e4c615f0d4c7ebc5c36e944a8283dfae3a9b58fd21d210d
font_01_sfnt_off00018ffd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18FFD 5476 bytes
SHA-256: 559f942901d020ebdd3df5b91f8cc2cc51651554e9589bbb1a51baefe070b95c

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