Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd6492153607ad18…

MALICIOUS

PDF

77.3 KB Created: 2021-03-20 05:16:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 1d71018af224d3fc09d68933553e90b7 SHA-1: 94a4965f2edb35084d159b5ca7fc1277a802802d SHA-256: dd6492153607ad186ba1f15f9434f10632a7a639acb43cb504641fdfc3c5fe22
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://golowaki.ru/123?utm_term=manma+emotion+songs++pagalworld PDF link annotation
    • https://cdn.sqhk.co/biluvetizom/riMieji/colorado_zr2_switch_panel.pdfIn PDF document text
    • http://vakafubetax.iblogger.org/komunixuf.pdfIn PDF document text
    • http://lobabinuladeri.medianewsonline.com/jekitidal.pdfIn PDF document text
    • http://kakorixow.mygamesonline.org/fukabomex.pdfIn PDF document text
    • https://cdn.sqhk.co/pigajifaw/egfibgc/96629322932.pdfIn PDF document text
    • https://cdn.sqhk.co/vuvupewog/awRNDWm/zombie_assault_sniper_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/pepupiribojo/RJhcgVU/flight_simulator_2020_xbox_series_x_release_date.pdfIn PDF document text
    • https://cdn.sqhk.co/zovaratigu/gcib3je/gorillaz_members_girl.pdfIn PDF document text
    • http://sibatike.getenjoyment.net/cara_membuat_cv_dengan_format.pdfIn PDF document text
    • https://cdn.sqhk.co/tamurikubol/b8vVUhh/oscar_the_grouch_costume_for_dog.pdfIn PDF document text
    • https://cdn.sqhk.co/vivijuzajus/ihaLpge/kagumuwamafexaviwoko.pdfIn PDF document text
    • http://xoroketogejuxe.mywebcommunity.org/instantaneous_velocity_calculus_khan_academy.pdfIn PDF document text
    • https://cdn.sqhk.co/gotuxixovumu/jc2URja/edvoice_smarter_school_communication_approach.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mudasaki.epizy.com/neo_historicism.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0877001b-5013-44cd-a001-c212e868011a/19280908838.pdfIn PDF document text
    • http://zudosikewemer.epizy.com/20492500749.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a30f89d2-be65-4739-ae83-99eeed0f4f13/44321864051.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7eb2a0de-0d48-46e8-9689-295705d1c9c6/86662329936.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c66c7f5a-6b10-4307-a674-b724ed11275a/jawomojuvewewivesedivutud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc14bd8c-010c-4b0e-b5b0-4a2f9f83b97c/dark_season_2_release_date_netflix.pdfIn PDF document text
    • http://nowivopikuzud.epizy.com/how_was_checkerboard_mesa_formed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/869d0e09-f1e9-482d-8d2b-2085663a7d16/4382258764.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eef4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF4 5376 bytes
SHA-256: 186912a83da957eb2b5848fc2759489873ef98cf2d0dfa05ac1254468c16dd0c
font_01_sfnt_off00010145.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10145 11276 bytes
SHA-256: 45602886f8432ae610dfde0676b8fb919bc3fc93eb4b24ca9881cadaa935db98

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