Malicious PDF — malware analysis report

Static analysis result for SHA-256 44b4c33b1c01953b…

MALICIOUS

PDF

75.0 KB Created: 2021-03-11 04:31:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 1e8b29390bdfac9034835bbae22ae3a5 SHA-1: 7d9d4bc3e63f880f229149ac6ca9e530bb115ef4 SHA-256: 44b4c33b1c01953b87d6d1b0191a5464a767134b8d1209d7c3f752909bf424d1
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous links to external websites, many of which are hosted on disposable domains and appear to be part of a link farm designed to obscure the true malicious intent. The ML classifier and ClamAV detection strongly indicate maliciousness, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8022

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://crophysi.ru/award?keyword=bikini+body+guide+2.+0+pdf+download PDF link annotation
    • http://wewofif.scienceontheweb.net/how_to_calibrate_infrared_thermometer_det-306.pdfIn PDF document text
    • http://jelebojibujij.iblogger.org/how_to_learn_carpentry_for_free.pdfIn PDF document text
    • http://pinopizo.sportsontheweb.net/tasizukogumixefuke.pdfIn PDF document text
    • http://tokepefanoxite.22web.org/19635841486.pdfIn PDF document text
    • http://guparob.mywebcommunity.org/13194540006.pdfIn PDF document text
    • http://dipugipedanam.sportsontheweb.net/luzufavatak.pdfIn PDF document text
    • http://povisowalikim.scienceontheweb.net/change_file_to_word_free_download.pdfIn PDF document text
    • http://terugate.mypressonline.com/vosonabu.pdfIn PDF document text
    • http://nemugub.mywebcommunity.org/69743110815.pdfIn PDF document text
    • http://ninomut.sportsontheweb.net/how_did_rome_treat_different_sections_of_its_conquered_territory.pdfIn PDF document text
    • http://davupopebuwiser.sportsontheweb.net/rosavudo.pdfIn PDF document text
    • http://ziratonis.iblogger.org/79729022125.pdfIn PDF document text
    • http://jusuzabajalaz.22web.org/jikuxevaxoli.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb79fc60-41a5-4ee3-8718-cc20b1409d4a/helter-skelter_definition_webster.pdfIn PDF document text
    • http://xakagigoneliv.myartsonline.com/relentless_from_good_to_great_to_unstoppable_audiobook_by_tim_s._grover.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/rijeziwawomimimikun.pdfIn PDF document text
    • http://xoxewunifas.epizy.com/alien_shooter_4._2._2_mod_apk.pdfIn PDF document text
    • http://xusoromi.epizy.com/26860577958.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f5faecf-ab34-42bb-a5a1-03d487359359/vitasukebubus.pdfIn PDF document text
    • http://pejonoma.epizy.com/rakipupurizodejep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf07412e-38bc-4f18-b81b-53f979dc59be/how_did_system_of_alliances_contribute_to_world_war_i.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a068448-0299-4c4d-8d8a-c4ce66d8c5db/master_forge_grill_replacement_parts_lowes.pdfIn PDF document text
    • https://s3.amazonaws.com/zoluwivebiro/96736872891.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7742e58a-acf9-459a-aec6-a4a87b68b27c/mememitare.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7D7 5688 bytes
SHA-256: f986a0cae69d174c7a241a2085af0b7b808f3997b82b2139f41328944c9a5b16

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