Malicious PDF — malware analysis report

Static analysis result for SHA-256 892c13a3c7efcdf4…

MALICIOUS

PDF

76.7 KB Created: 2021-02-19 01:48:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d6d7968919083d9970180d43186f46d2 SHA-1: 155d919ec3dee9e038867a9ef64be968165deb80 SHA-256: 892c13a3c7efcdf4a40ddffe6d2bccbceeae35387fabbda8d9be17c47cfbab69
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. It contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm or phishing infrastructure. The document body, though heavily obfuscated, contains keywords related to 'worksheet' and 'thermodynamics', likely a lure to disguise malicious intent.

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://bologen.ru/wix?keyword=1st+law+of+thermodynamics+worksheet+pdf PDF link annotation
    • http://nimiridisavir.22web.org/website_header_design_templates_code.pdfIn PDF document text
    • https://cdn.sqhk.co/xiwapusumoge/eUihC1x/5909427411.pdfIn PDF document text
    • http://xemopubuga.iblogger.org/mendelian_genetics_worksheet_1_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/tifobebe/gyjfRic/vosusugimijod.pdfIn PDF document text
    • https://cdn.sqhk.co/jorisuzil/hgT3boR/starfish_manor_hotel_nautica_suite.pdfIn PDF document text
    • https://cdn.sqhk.co/gilevetu/iab2xj7/core_x_system_canada.pdfIn PDF document text
    • https://cdn.sqhk.co/zonakagud/bjet0ln/best_of_the_eagles_album_cover_location.pdfIn PDF document text
    • https://cdn.sqhk.co/puxedimuwo/hcjdqid/jasper_report_tooltip_expression.pdfIn PDF document text
    • https://cdn.sqhk.co/pafevola/jejf6AW/mavuvevanizizukesoxorufa.pdfIn PDF document text
    • https://cdn.sqhk.co/fusevesapime/hfLddhe/53315854312.pdfIn PDF document text
    • https://cdn.sqhk.co/mikedeto/fjeYNjh/tozijifulugaxudigevanapi.pdfIn PDF document text
    • https://cdn.sqhk.co/mofosalamo/VexuB4N/nikeboziloxorejipiromoj.pdfIn PDF document text
    • https://cdn.sqhk.co/raxuzuvuluf/Pgd4Rhb/carnivores_ice_age_mod_download.pdfIn PDF document text
    • https://cdn.sqhk.co/fabavukunatu/iOhhjbp/tipodeporakojinaw.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://solatilexi.epizy.com/odia_bhajan_nonstop_dj_song.pdfIn PDF document text
    • http://robogotut.epizy.com/7071808646.pdfIn PDF document text
    • http://nozovov.rf.gd/85417565161.pdfIn PDF document text
    • http://lokuvutifinulef.rf.gd/how_to_install_a_ceiling_fan_without_the_downrod.pdfIn PDF document text
    • http://wipidomi.rf.gd/net_framework_3._5_full_offline_installer.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 5

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFC8 2460 bytes
SHA-256: fef988247b811a372aaf92dc1bfc3df48cafb0d12c6719b307c9653082a60128
font_01_sfnt_off0000dad2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAD2 5608 bytes
SHA-256: 8ed282ffd652fd3893132472d166debaa2782ab6aba4abb52412e1167118d9a4
font_02_sfnt_off0000eddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDDB 9700 bytes
SHA-256: 693a985b6b1a5e81831a6a8e3518a2dcb637dde6d22129b2ee3975c51ec67f53
font_03_sfnt_off00010f56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F56 16180 bytes
SHA-256: c71b0f50d8c3dc6979512fe6e5575c7df5d4a9c99d8808cd2be629ca5f20be94

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