Malicious PDF — malware analysis report

Static analysis result for SHA-256 899c30e177983c99…

MALICIOUS

PDF

73.0 KB Created: 2021-03-22 04:41:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f30978c24cafec7c2eb756be8024821e SHA-1: fcb86f21c68730718619f11b0db360dd66b0618a SHA-256: 899c30e177983c99e9632438cfc7714fd08c4e97664eb11e8f695097cb5e673e
126 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a link farm on disposable hosting and is flagged as malicious by a machine learning classifier and ClamAV. The embedded URL points to a domain that appears to be used for phishing or malware distribution, disguised as an educational resource. No scripts were extracted, but the PDF structure and URL suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://lozipotod.ru/wix?keyword=acids+bases+and+salts+cloze+answer+key PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4409098/normal_5fcdb35c20e66.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368469/normal_5ff75d089b86b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454049/normal_602c58bbe6fe8.pdfIn PDF document text
    • http://fubewakixodi.22web.org/49860585266.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412902/normal_5fc64a1fba894.pdfIn PDF document text
    • http://xawikeroteguvu.iblogger.org/netorirorijifezimid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466996/normal_604a157eaace2.pdfIn PDF document text
    • http://bigowet.xyz/biweekly_payroll_calendar_templateo604i.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392660/normal_5fee2b5ff294e.pdfIn PDF document text
    • http://vinnipoh.fun/ludulewowopiluxujuwogac6xb5.pdfIn PDF document text
    • http://cashfree.store/ranunuvutetunukajutg2f51.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/443fc891-070e-4207-9303-e6f4723360cb/lost_sea_ps4_gameplay.pdfIn PDF document text
    • http://mokuzamiwebifet.epizy.com/38366120466.pdfIn PDF document text
    • http://girinuluzu.rf.gd/korumufazexivefoxaved.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fda374f3-e29a-4add-9a4e-88379aa4347b/dark_sunset_wallpaper_hd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7a4c381-1925-455d-a24a-ffe1a7ec6e2d/sumomoxuwoditesiregivarik.pdfIn PDF document text
    • http://didaduxazej.epizy.com/kemusowonomigujadevedeti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db3791dc-d2db-4523-9b8c-f88c2ab566ed/xfinity_tv_app_connection_error.pdfIn PDF document text
    • http://furofazitogo.epizy.com/kim_kardashian_hollywood_pet_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5982e082-5d0e-40e9-bc8c-ad854a3d5fb2/what_are_the_4_types_of_interpersonal_communication.pdfIn PDF document text
    • http://togalufunepobaz.rf.gd/malaguena_salerosa_sheet_music.pdfIn PDF document text
    • http://divifafapinuk.rf.gd/22313495610.pdfIn PDF document text
    • http://bemuvubovewe.epizy.com/brain_teaser_printable_sheets.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d70f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD70F 1684 bytes
SHA-256: c47328b99d1a8106722297ddf3976446a0c29354b3be907203f77db8ad888c37
font_01_sfnt_off0000df74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF74 5368 bytes
SHA-256: 80535f09cbee698ed3932b2aef887843759c3a22493ca73055a2418951263e2f
font_02_sfnt_off0000f1e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E4 10688 bytes
SHA-256: 3a131884026e497ddff4a81f3b869f1a7d2307e848b8f8f6e4cb690edcb0e76a