Malicious PDF — malware analysis report

Static analysis result for SHA-256 d625b9d49a83feee…

MALICIOUS

PDF

76.5 KB Created: 2021-03-14 02:17:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: f5decc5711f299d35a4cc826679807aa SHA-1: b6b484af90122250753418559da7a244abf5f1ce SHA-256: d625b9d49a83feeed4d0d3c775281be929b786b0e6f68541153b91847c88d693
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, indicating a link farm or phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were directly extracted, the PDF structure and embedded URIs are typical of phishing lures designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://zajinet.ru/strik?utm_term=what+intermolecular+forces+are+present+in+nh4cl PDF link annotation
    • http://importants.space/22148799019rlkiq.pdfIn PDF document text
    • http://frut-tree.site/xolofiwifuvusitokigoko0b4w6.pdfIn PDF document text
    • http://judizoduti.iblogger.org/what_is_the_rules_of_magic_about.pdfIn PDF document text
    • http://findattime.com/lajixanewifiiywup.pdfIn PDF document text
    • http://topcreditreport.info/laporarizexafugaduao15i.pdfIn PDF document text
    • https://cdn.sqhk.co/pitekofotada/jbjiyCE/draw_in_chess_game_crossword.pdfIn PDF document text
    • http://anyita.space/supply_chain_risk_management_definitioncmt0a.pdfIn PDF document text
    • http://fisidunetozusi.iblogger.org/bobefolulup.pdfIn PDF document text
    • https://cdn.sqhk.co/najadiwun/hhS0ibh/dragon_ball_super_anime_episode_guide.pdfIn PDF document text
    • http://otomail.business/mp3xd_gratis_para_celulares070d4.pdfIn PDF document text
    • http://xovuwut.iblogger.org/luronanem.pdfIn PDF document text
    • http://confirmationhelpcenter.com/diligonalojasexexezof8eiv.pdfIn PDF document text
    • https://cdn.sqhk.co/fezemepusap/XOSMkb7/fegotegizepakiz.pdfIn PDF document text
    • http://job-finder.space/sims_3_origin_download_mactd39x.pdfIn PDF document text
    • https://cdn.sqhk.co/kigaratak/jijehj1/road_trip_songs_2019_download_free.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/gomaxod/bunny_the_killer_thing_parents_guide.pdfIn PDF document text
    • http://romevakamijoke.epizy.com/avesta_yasna.pdfIn PDF document text
    • http://nifagusimesizi.epizy.com/feasibility_study_template_doc.pdfIn PDF document text
    • http://wuwitizezaxevo.rf.gd/compound_interest_exercises_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/juvosi/56045372535.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/kuzaw.pdfIn PDF document text
    • http://jawegoxizifiti.epizy.com/gladius_wow_addon.pdfIn PDF document text
    • https://s3.amazonaws.com/dobikasukavu/73231718237.pdfIn PDF document text
    • http://zojimako.rf.gd/wogatiwefajeserojozex.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/croatian_rhapsody_violin_sheet_music.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0B1 2900 bytes
SHA-256: a28fcc4ba65d8171a55e8b87d646ac5d1dd213f66ab2b0026fd39e5ca5d32d1a
font_01_sfnt_off0000eaf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF3 5356 bytes
SHA-256: 3e106e3ffd91afb2d508c7398564267093301138d27a9664155874096dfebd95
font_02_sfnt_off0000fd15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD15 10696 bytes
SHA-256: 563bc1e276d902cede23b8934d56fec64ddcf50b96f5e2333aabf5ae5e984285

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