Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b2ab1f1b4d021ab…

MALICIOUS

PDF

74.6 KB Created: 2021-04-08 00:54:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c7c94575528cb18a9103a797c1034edf SHA-1: 5786b16e73b32322fc27c73c38d5596afc3e016b SHA-256: 1b2ab1f1b4d021abf0f9d3efacea4ede16a8744fe9d01aabd94b287442923974
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://nipisod.ru/wix?keyword=math+function+and+relation+precalculus+worksheet PDF link annotation
    • https://cdn.sqhk.co/kejofuvata/1Ihigh7/81034073469.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420600/normal_5fe276a69015a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454668/normal_5fcf596276dc0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490263/normal_606617c29528a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374542/normal_601950be7dc55.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490519/normal_5ffc9fd9bed02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445125/normal_5fda0c236a531.pdfIn PDF document text
    • https://cdn.sqhk.co/gunobawiwax/hcjcxw0/random_video_calling_chat.pdfIn PDF document text
    • https://cdn.sqhk.co/nuditufu/aMgyjeT/amazon_echo_dot_plug_holder.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/93188118-16a8-4bb4-a53f-c3534ac7e406/how_to_setup_bunker_hill_security_system.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/dr_jekyll_and_mr_hyde_book.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/how_to_connect_blink_to_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/zedilegol/samsung_nu7100_manual_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/mazarewamavivo.pdfIn PDF document text
    • https://s3.amazonaws.com/bolovopizonuki/bella_y_bestia.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/mowegidofinedimufuro.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/nagolajomikowib.pdfIn PDF document text
    • https://s3.amazonaws.com/jinotugiwomo/97550730147.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e8e66fd-715c-49dc-9ce7-cf34be695bd1/css_bangla_tutorial_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd466cc4-d3e5-485f-9f7e-8ba5121ef32e/pigewudedigolamow.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_off0000e2d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2D8 5404 bytes
SHA-256: 980940beec881482b7c1ac59c7d44e4358ac5383a991b20aa9b69348c0ae75b8
font_01_sfnt_off0000f555.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF555 11764 bytes
SHA-256: 08734d354dbee8689054e71c07fca2db82769a5303f9a3269762bbf308561f68

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