Malicious PDF — malware analysis report

Static analysis result for SHA-256 fba1b1777813ffb4…

MALICIOUS

PDF

73.2 KB Created: 2021-02-19 23:13:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 209bf83ea5ed24e69fceb005f4aa976e SHA-1: ddc44c7e23f8ee232056dce98c5c16a4d2d700a1 SHA-256: fba1b1777813ffb48a5f43433a37588522d67acf972cd734c293b2cd8359bbc4
126 Risk Score

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://seumenha.ru/wix?keyword=pre+algebra+pdf+textbook PDF link annotation
    • https://zidovularirijap.weebly.com/uploads/1/3/4/7/134718784/663281.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490264/normal_601cce7950a65.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447095/normal_5fcaeba80d4b2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502906/normal_60059e45d230f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454967/normal_60102176c3639.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457881/normal_60287815dab1c.pdfIn PDF document text
    • http://catsism.com/introduction_to_law_enforcementfn82m.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366348/normal_602a967b29d68.pdfIn PDF document text
    • http://pipvip.ru/siwixubalelovarupatz04x.pdfIn PDF document text
    • https://mavezuwunokil.weebly.com/uploads/1/3/4/6/134627141/e13de3d5582f1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473632/normal_5fcac94a3825e.pdfIn PDF document text
    • https://tuniforokot.weebly.com/uploads/1/3/2/6/132682883/877458.pdfIn PDF document text
    • http://teaitalis.space/double_cross_answersyb9m4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zisekajoreva.epizy.com/msvcp140._dll_win7_64bit.pdfIn PDF document text
    • http://jefevuxivux.epizy.com/captain_marvel_full_movie_tamilrockers._com.pdfIn PDF document text
    • http://venakato.epizy.com/zitataperovusidomuzamipon.pdfIn PDF document text
    • http://wuseruri.rf.gd/m_audio_oxygen_49_mercado_libre_venezuela.pdfIn PDF document text
    • http://jupelujunu.epizy.com/dubapofexekuta.pdfIn PDF document text
    • http://pejigevug.rf.gd/bluetooth_low_energy_supported_android_devices.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_off0000e21c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE21C 5304 bytes
SHA-256: ddfff057c0b91fcb1b9fd85c5f6f7d49e315096670e525c3e8d9e0df3417d07e
font_01_sfnt_off0000f43b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF43B 10400 bytes
SHA-256: 68c9c159d1040ed17d00cf657de9b30ab4bb3bdef74f1860cad7eed51973777c