Malicious PDF — malware analysis report

Static analysis result for SHA-256 21742061f0654232…

MALICIOUS

PDF

75.9 KB Created: 2021-03-27 13:48:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 2ac56f5f59ab4bf92403dca819a71893 SHA-1: fdc5a9af40b26579bf61155f5e8b80396f89303e SHA-256: 21742061f065423230e9715d078d2bc8bb037e17549d768228228feb3dda23ce
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or malware distribution attempt. The document body and embedded URLs suggest a lure related to 'unblocked games', directing users to potentially malicious websites. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document, likely intended to lead users to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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=decision+medieval+unblocked+games PDF link annotation
    • http://tedurelaseji.mygamesonline.org/vifoxu.pdfIn PDF document text
    • http://jemulobapamiwu.mywebcommunity.org/samunalewuregokeforadula.pdfIn PDF document text
    • http://tcerkovniekupola.space/azur_lane_tech_boxesimnzk.pdfIn PDF document text
    • http://sidufapas.mywebcommunity.org/engineering_mathematics_syllabus_for_gate_ece.pdfIn PDF document text
    • http://fejekadiwoxobiz.getenjoyment.net/meditations_on_first_philosophy_meditation_6_summary.pdfIn PDF document text
    • http://vknacruckalaikov123.xyz/62455432111m8o9i.pdfIn PDF document text
    • http://verifedform.com/woguripirokovunajowilegy5ioj.pdfIn PDF document text
    • http://luxshop21.site/atwood_tankless_water_heater_service_manualuljsx.pdfIn PDF document text
    • http://pagavopalubutu.scienceontheweb.net/83142502338.pdfIn PDF document text
    • http://varietystore.website/advanced_engineering_mathematics_ken_stroudw025m.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/juwofuxufijup/marlin_model_80_aftermarket_stock.pdfIn PDF document text
    • http://mujebik.atwebpages.com/beckmann_and_ling_s_obstetrics_and_gynecology_8e.pdfIn PDF document text
    • https://2cc3dcad-61c1-4442-8662-ca5be7cd8672.filesusr.com/ugd/71b93f_3d3a688a220449f681a4f041248593f6.pdf?index=trueIn PDF document text
    • http://xifeloj.onlinewebshop.net/69173716336.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b63479fd-b2b4-4b05-9715-a31ca1aba43a/wupijixulebezumu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5535f3e5-2a2c-44cc-a0dd-c7748d11745e/fozudavinizutawabadef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e2d4eae-52fa-4620-b39b-fe95a2d4ea46/rurijejunexekisijijeteb.pdfIn PDF document text
    • https://2a984544-7cb8-4a4d-9f60-e686f7994e39.filesusr.com/ugd/1434d3_8b524f483fb34e6195d95ebb0b4538ea.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/android_studio_auto_remove_unused_imports.pdfIn PDF document text
    • https://2ae8fa2d-8b21-4cd7-bd94-b44763fb9b4d.filesusr.com/ugd/8e1ec7_b8f75436a1d2428b9f9773611a8750fd.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dukavunivifa/71509676723.pdfIn PDF document text
    • http://powagamojij.onlinewebshop.net/69891313011.pdfIn PDF document text
    • https://e86c6366-0652-46cb-9e1f-5633a133dba9.filesusr.com/ugd/510a18_ec1405632672405c9d7192cdd8880e79.pdf?index=trueIn PDF document text
    • https://11ca5eb4-0abe-4d5d-8073-3f36f6088e80.filesusr.com/ugd/8b62d8_23f89159d2434e45a250b8c24d8497e2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/67736450397.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8ddb360-bf5a-4f3c-863f-edb84bc53a35/how_do_you_record_dividends_paid.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/95482134102.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_off0000eafd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAFD 5428 bytes
SHA-256: 4b64b45b2dcebce197e256105669db1cda34ba79e16dbefbd72b9a1c3d6cf30a
font_01_sfnt_off0000fd70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD70 10624 bytes
SHA-256: 6d274acc752f58369d7bd671c2503a523005be50a9886f73a383330ade203c0d