Malicious PDF — malware analysis report

Static analysis result for SHA-256 f89cd3f5ed6b4cd8…

MALICIOUS

PDF

80.4 KB Created: 2021-03-02 08:18:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: eecf4d7006967fcd23d0f2c1ea7b3f1d SHA-1: 18000b14121cc6e82e5ad870cd75cdace7829d7d SHA-256: f89cd3f5ed6b4cd8af9d916047cdb0648b4f96b53e43d4a61fbb70e912f4bfd9
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to filling out a marriage certificate form online, directing the user to a suspicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://lozipotod.ru/strik?utm_term=how+to+fill+marriage+certificate+form+online+delhi PDF link annotation
    • https://fotelosalif.weebly.com/uploads/1/3/4/4/134463398/7189936.pdfIn PDF document text
    • https://vavaterojitenoj.weebly.com/uploads/1/3/4/8/134898986/vetisawenevobovuket.pdfIn PDF document text
    • http://nuxuxavolas.22web.org/wpf_listbox_multiple_datatemplate.pdfIn PDF document text
    • https://kutemipemowu.weebly.com/uploads/1/3/4/8/134860595/zexagifujir.pdfIn PDF document text
    • http://wijetaz.mypressonline.com/periodos_del_derecho_procesal_civil_romano_legis_actiones.pdfIn PDF document text
    • https://cdn.sqhk.co/gaxudofexal/GApT9gj/fonegizitopoziziropamujul.pdfIn PDF document text
    • https://cdn.sqhk.co/pugipepa/jdgijfx/cute_red_mice_live_wallpapers.pdfIn PDF document text
    • https://cdn.sqhk.co/wofazexej/cYm2W0B/bixubaxagegenapiz.pdfIn PDF document text
    • http://femuxeririta.mygamesonline.org/ikea_metal_bed_frame_wood_slats.pdfIn PDF document text
    • https://segamivudafipem.weebly.com/uploads/1/3/2/7/132740242/furamolajepokezagolo.pdfIn PDF document text
    • https://cdn.sqhk.co/dexizajifu/DQ3iaw8/pinball_fantasy_download_windows_7.pdfIn PDF document text
    • https://cdn.sqhk.co/wevexifimur/1zFiegg/13955473118.pdfIn PDF document text
    • https://lokuzovitopoz.weebly.com/uploads/1/3/4/8/134871506/pasapaxukigepite.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/nademopor/45289305430.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/woferarub.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/koh_samui_party_guide.pdfIn PDF document text
    • http://bisumige.epizy.com/strikemaster_ice_auger_blade_cover.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/social_media_icons_adobe_xd.pdfIn PDF document text
    • http://toronakurimub.epizy.com/92234852526.pdfIn PDF document text
    • http://gilebufamefaf.rf.gd/41360095617.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_off0000fd4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD4E 5312 bytes
SHA-256: 73c3eb1f87b01a9feb8eff4f9c9a0b8d1d1489eb6be83038b90dbc5ba6b3ac86
font_01_sfnt_off00010f3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F3D 10824 bytes
SHA-256: ab141742f2310626adc2e0fbc98581d2da8de87c453f5d6d29c898b4ac570484

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