Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fb78f49503ae647…

MALICIOUS

PDF

85.0 KB Created: 2021-03-17 09:33:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1bf65a20c7b67534b905cc4303666ef SHA-1: 91e50260cb7669841336f0190566eb89e8367127 SHA-256: 0fb78f49503ae6472632bd407a612b6587460eef647f7c5e0c5999738050d7e3
96 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating an external URI and is flagged by a machine learning classifier as malicious. The document body, though heavily obfuscated, suggests a lure related to 'fancy pants adventure unblocked 4', likely directing users to a malicious website. The presence of multiple suspicious URLs further supports the phishing and malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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=fancy+pants+adventure+unblocked+4
    • http://lnstagramcentre.net/texijasajozonejijojy861w.pdf
    • https://cdn.sqhk.co/retugatodof/hija0WY/16516697052.pdf
    • https://cdn-cms.f-static.net/uploads/4475571/normal_5fe7c68316636.pdf
    • http://vuvuga.xyz/foludetaguotx.pdf
    • https://cdn-cms.f-static.net/uploads/4420030/normal_604d0cbdc1fac.pdf
    • https://static.s123-cdn-static.com/uploads/4380078/normal_5fe2134351a18.pdf
    • https://cdn-cms.f-static.net/uploads/4407664/normal_60281fa833e0d.pdf
    • http://fb-ig-violation.com/352151582812ybii.pdf
    • https://cdn-cms.f-static.net/uploads/4501503/normal_5fd9d8fa303b2.pdf
    • https://static.s123-cdn-static.com/uploads/4454042/normal_5fcd0ebf62b84.pdf
    • https://cdn.sqhk.co/lexelinowe/hd3jfij/64608120025.pdf
    • http://strapslap.online/talukegafosepikukenabtqi76.pdf
    • https://cdn.sqhk.co/kukisigafumi/ae4vqfx/nasa_federal_credit_union_mortgage_reviews.pdf
    • https://cdn-cms.f-static.net/uploads/4366623/normal_603ee4cde1c37.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/33efb9bb-203c-4bfe-8dc2-2ee54a80dbb3/what_does_pre_mean_as_a_prefix.pdf
    • https://s3.amazonaws.com/jirebonudur/asrock_z77_pro3_ethernet_driver.pdf
    • https://uploads.strikinglycdn.com/files/ae4c0983-b3f9-4c9a-bd6c-3b00cf547d81/vevitozogevirikuzunixuwix.pdf
    • https://s3.amazonaws.com/jumedemimo/48591319520.pdf
    • https://s3.amazonaws.com/feseni/adjective_worksheet_for_class_3_with_answers.pdf
    • https://uploads.strikinglycdn.com/files/ac7f5c51-854e-40c7-ab51-6b69658f6c50/14128469629.pdf
    • https://uploads.strikinglycdn.com/files/b7ddc3eb-b179-4d8d-b73b-81b118f5ca64/how_to_get_alexa_to_control_roomba.pdf
    • https://uploads.strikinglycdn.com/files/e1ad92dd-afc2-489e-96d8-0d563addc633/epson_xp_200_printer_troubleshooting.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010c51.bin
99d56633763505c6b81a0650c3823f2349084aad7229e8bf0601e775beeef1fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C51 5476 bytes
font_01_sfnt_off00011f10.bin
f99888b524c200e942f8b2e39ca7bd3c3085a8b1a673ce422f5229e6c80cbeba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F10 11592 bytes

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