Malicious PDF — malware analysis report

Static analysis result for SHA-256 0607f9bf3c046748…

MALICIOUS

PDF

80.7 KB Created: 2021-03-30 16:31:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: f90b8bc043da059f33347da5307c96ca SHA-1: c6f0b0df87c2f13e7d806ae2aa6cc294349f7fe3 SHA-256: 0607f9bf3c046748dac5d9cd3dcb1c1098f9de9cef1841425818cb6ad00749b4
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://soxebez.ru/wix?keyword=jack+frost+x+reader+oneshot PDF link annotation
    • http://pokinusuvato.getenjoyment.net/dirop.pdfIn PDF document text
    • https://cdn.sqhk.co/sajixobuko/iiMuhfM/67922330225.pdfIn PDF document text
    • https://cdn.sqhk.co/bomogawiza/1idzggk/drawable_to_bitmap_android_java.pdfIn PDF document text
    • http://powerhdniy.space/14150210673cnq0t.pdfIn PDF document text
    • http://noverst.xyz/box_stuck_on_acquiring_application_informationm37se.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452206/normal_5fd340cb319c9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447641/normal_6001711e93e7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464070/normal_6023cc228185c.pdfIn PDF document text
    • https://cdn.sqhk.co/nulaliki/dyi4Jif/red_white_and_blue_flag_with_star.pdfIn PDF document text
    • http://cooldomen.space/2007_honda_fit_remote_key_battery_numberr9bwp.pdfIn PDF document text
    • http://bijukexamova.scienceontheweb.net/solaris_os_tutorial.pdfIn PDF document text
    • http://reduslim-ordina.site/youtube_kenmore_washer_repair_lid_switchqbmjx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490256/normal_605942488383a.pdfIn PDF document text
    • https://cdn.sqhk.co/lodikorep/d6gjiiX/76574598671.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://4edd92ed-4e96-4c3d-a837-a16c7246ae9e.filesusr.com/ugd/7c3149_b72368f20d774857b00f83b99250d24e.pdf?index=trueIn PDF document text
    • https://4e4301d6-cc9a-4939-960a-6b497c1efea6.filesusr.com/ugd/d78803_16a83b6293b54c6687c5978db5251101.pdf?index=trueIn PDF document text
    • https://5db246a0-94da-4013-9f64-c970003367b9.filesusr.com/ugd/ca5179_c756d4cc941e4def9e881a64a2a4f989.pdf?index=trueIn PDF document text
    • http://bizedesaxifu.onlinewebshop.net/ralupelagak.pdfIn PDF document text
    • https://5e54d98c-4257-4cc7-9010-48f3df296eb2.filesusr.com/ugd/05240c_83b7e1a9027f4d8bb4916909b72d2855.pdf?index=trueIn PDF document text
    • https://d5f1d3db-1598-48d0-a061-764c190a6564.filesusr.com/ugd/866690_25b41533e42f47cf9d45f3cdb6cd70ae.pdf?index=trueIn PDF document text
    • http://ketabigumowun.atwebpages.com/japanese_candlestick_patterns.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_off0000ffb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFB5 5196 bytes
SHA-256: 1a0014b1b0a003d58bb159fae2b18d715c35e78513597d37c597f0740dcd43e7
font_01_sfnt_off00011162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11162 10524 bytes
SHA-256: 75193a154bd01c2352171d0b5c3933397f11a0a3808884c6a7ee128b2889e1b4

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