Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2cc5c67c0998869…

MALICIOUS

PDF

79.0 KB Created: 2021-03-23 01:52:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: a69d88f73d7fad74b35db65ab608b0df SHA-1: 21cdb10e847e81566fe1aed76eb45181ab536a0e SHA-256: d2cc5c67c09988690d7f8a6cd4c45e84cfbfc9454415d16b6abc964d9e7b886e
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable domains and are flagged as a link farm. The document body, though heavily obfuscated, contains references to 'Netbeans 8.0.2 for php' and 'wkhtmltopdf', suggesting a lure to download or access related content. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'ML_NYX_PDF_MALICIOUS', along with ClamAV detection, strongly indicates malicious intent, likely phishing or malware distribution via external links.

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://ponafet.ru/123?utm_term=netbeans+8.+0.+2+for+php PDF link annotation
    • https://cdn.sqhk.co/zuxolusufa/hjifDic/96098195866.pdfIn PDF document text
    • https://cdn.sqhk.co/kiraxozi/WiDhija/bomb_chicken_game.pdfIn PDF document text
    • https://cdn.sqhk.co/kisilusotuke/iekhdic/zusewalawowexeruvidi.pdfIn PDF document text
    • https://cdn.sqhk.co/fiporalisu/8vTdXy5/zetaw.pdfIn PDF document text
    • https://cdn.sqhk.co/zogameva/LieiRhg/free_dating_sites_mexico.pdfIn PDF document text
    • https://cdn.sqhk.co/tamejenonisi/fTYxRic/best_zombie_apocalypse_survival_tips.pdfIn PDF document text
    • https://cdn.sqhk.co/sevigexew/ZhhH7gj/gorgeous_glitter_nail_gems.pdfIn PDF document text
    • http://sikevemekoma.mypressonline.com/mukiweruvibixu.pdfIn PDF document text
    • http://lubevos.scienceontheweb.net/cantata_de_natal_alegria_partitura.pdfIn PDF document text
    • http://zomesotemaxage.66ghz.com/vufusipuvaf.pdfIn PDF document text
    • http://gitikirazidapi.medianewsonline.com/zokesidilol.pdfIn PDF document text
    • http://nelilovodik.scienceontheweb.net/farmacologia_ansioliticos_e_hipnoticos.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/borokegujuzero/hard_acoustic_guitar_songs_to_learn.pdfIn PDF document text
    • https://s3.amazonaws.com/lomiwexuva/andhra_pradesh_driving_license.pdfIn PDF document text
    • https://s3.amazonaws.com/tipikaxe/explosive_child_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46058bf9-de7b-4919-be75-53aa843138b2/how_to_replace_deck_belt_on_husqvarna_zero_turn_mower.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffd9a2f6-e0d2-4011-b423-4e88181de72c/tujonovimifiwuju.pdfIn PDF document text
    • http://podoremekuzepo.rf.gd/contracciones_isotonicas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40323ea9-faeb-4d1c-940c-6d03e8e9ca0c/refabuxavuzigamu.pdfIn PDF document text
    • https://s3.amazonaws.com/genedesowul/77033782825.pdfIn PDF document text
    • http://togipumenotu.epizy.com/tchibo_cafissimo_pure_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb7eeba1-e618-4fc8-b378-b171293d1774/xipivefusetovebusivanan.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_off0000f6b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B5 5564 bytes
SHA-256: 0807287bc4602629811a5b61bd455d2ef06640ad355aa7651d76fc53665b4622
font_01_sfnt_off000109a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109A6 10804 bytes
SHA-256: 4afcbf21187cebbaf9e1f730b255343ec6feb8f8957f30bafd8d86b1f16ad93b

Open this report in the interactive analyzer, or submit your own file for analysis.