Malicious PDF — malware analysis report

Static analysis result for SHA-256 e50f0f65b975c4c4…

MALICIOUS

PDF

77.6 KB Created: 2021-04-02 09:01:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b94317a4cc86dacbf6bff243c1e0b941 SHA-1: 992ea34950ad037aa125b053ae525fc3cd8b5ab3 SHA-256: e50f0f65b975c4c4eff973bad5eb74cc20a900788e0f97195af2ab1746a698be
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a suspicious domain, identified by heuristics as a potential phishing or malware distribution vector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or delivering a secondary payload. No scripts were extracted, but the presence of external URIs and the overall detection profile suggest a spearphishing attachment attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xezojetit.ru/strik?utm_term=nesco+pressure+cooker+parts
    • http://lodixewovufosa.iblogger.org/kegifinefonexeveladepuwer.pdf
    • https://cdn.sqhk.co/pojizurigos/jcYWzig/pawezafisumisaze.pdf
    • http://peroruse.iblogger.org/philips_lumea_prestige_manual_de_utilizare.pdf
    • https://cdn.sqhk.co/matikefateri/ijhc1wN/84633118032.pdf
    • http://help-bluebadgecustomer.com/45484794580dx2ns.pdf
    • https://cdn.sqhk.co/fikubife/jhged1d/temple_run_oz_apk_mod.pdf
    • http://fenellalucynelle.info/20959641280velba.pdf
    • http://kinoogf.space/evermotion_archinteriors_vol_30alpio.pdf
    • http://agreevudb.rest/35928514622ue47l.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/diwitapezu/atari_lynx_emulator_android_apk.pdf
    • https://s3.amazonaws.com/fobupojowojon/33421627725.pdf
    • https://s3.amazonaws.com/wujixus/radical_and_fractional_exponents_worksheet.pdf
    • http://xanokilil.rf.gd/jikasuzumomote.pdf
    • https://s3.amazonaws.com/lorifawuvawot/norej.pdf
    • http://xubevudedugo.epizy.com/public_finance_management_act_regulations__2020_national_government.pdf
    • https://s3.amazonaws.com/matogapibelifiv/hp_laserjet_p4015n_printer_toner.pdf
    • https://s3.amazonaws.com/damerirazib/video_song_app_for_jio_phone.pdf
    • https://s3.amazonaws.com/pigolo/jimipamotutaxebudogisov.pdf
    • https://s3.amazonaws.com/fifomi/avg_remover_32_bit_free.pdf
    • http://bizurano.epizy.com/bengali_movie_oporadhi_video_song.pdf
    • http://zotavoje.rf.gd/gixono.pdf
    • https://s3.amazonaws.com/kewakuko/titulos_de_credito_reglas_generales_y_su_clasificacion.pdf
    • https://s3.amazonaws.com/punagilelabon/mujuki.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f334.bin
faf98ac88eab456ef5dffc27be183be76a45240b49e8f4f0675e0b6da6d38a6a
pdf-font-stream PDF embedded font (sfnt) at offset 0xF334 4928 bytes
font_01_sfnt_off00010412.bin
81bbe3904846a9755408a72da66144c986e3634db7d0a2fded56a966030ad140
pdf-font-stream PDF embedded font (sfnt) at offset 0x10412 10892 bytes