Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fab16f8ab0b165f…

MALICIOUS

PDF

75.6 KB Created: 2021-03-11 00:24:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: d1f301b9b165a79b9cd679f371de185b SHA-1: be9912b012f21a7a2da5bc0a18823cc509321f0d SHA-256: 9fab16f8ab0b165f0897e342ec1c2d960486a67017a75fb98682431e8aa31b10
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external URIs, with a primary focus on https://mezovuduw.ru/award, suggesting an attempt to redirect users to potentially harmful content. The document body, though partially corrupted, indicates a lure related to downloading a dictionary, which is a common tactic for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://mezovuduw.ru/award?keyword=english+to+urdu+dictionary+free+download+full+version+pdf PDF link annotation
    • http://busimaderule.mywebcommunity.org/4262474655.pdfIn PDF document text
    • https://cdn.sqhk.co/lijuwezasip/SghjdCV/fish_tanks_around_me.pdfIn PDF document text
    • http://tijudozi.scienceontheweb.net/turikonimaminanane.pdfIn PDF document text
    • http://reduslim-italy.site/ganapati_pancharatnam_stotram_telugu_lov87l5.pdfIn PDF document text
    • https://cdn.sqhk.co/rerunagakiz/ihgd4R0/vedawu.pdfIn PDF document text
    • http://pitushok.space/lg_washing_machine_repair_service_center_ahmedabad07uh2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411932/normal_5fc9e577792d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369764/normal_60285f544811b.pdfIn PDF document text
    • http://teren.fun/it_ch_2_parents_guideo32yn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498348/normal_5fdc9ff6d1070.pdfIn PDF document text
    • https://cdn.sqhk.co/botonerepap/ihcghR5/mozinixitatilunudonisa.pdfIn PDF document text
    • http://yourbigdick.space/debiding3tyx.pdfIn PDF document text
    • http://wudaxozibutix.sportsontheweb.net/95497199424.pdfIn PDF document text
    • https://cdn.sqhk.co/suxepemup/jf7whiU/exoskeleton_meaning_examples.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/301cd4a6-9219-4059-9f1e-4719bd21b573/how_do_you_describe_barista_duties_on_a_resume.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45f77666-256c-45ab-8cc9-6129cd2da9d3/how_much_is_a_mega_neon_fly_ride_dog_worth_in_adopt_me.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/breville_smart_oven_air_fry_french_fries.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2dd1bd89-d582-4533-824a-f061c29ac91b/botukikebuxilu.pdfIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/shipping_label_template_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/jijonitovelenuzipamowaxan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a41fc9cc-3e5b-4c4e-9e6f-ed7e0cd98042/viva_water_cooler_keeps_beeping.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_off0000e82e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE82E 5628 bytes
SHA-256: 22f6dd71a29c1056d3789d6ae62a8950efc106ead8f39c5522cc6313e4f68884
font_01_sfnt_off0000fb72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB72 10916 bytes
SHA-256: 7b642928c8dc0454caf29bf8eca34582ccf125f11f54cc74e1f361eb1d13d8d9

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