Malicious PDF — malware analysis report

Static analysis result for SHA-256 a951cf48f9a8dcdf…

MALICIOUS

PDF

68.2 KB Created: 2021-02-19 07:36:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ad8263b94376be9f9136627e87a1a3da SHA-1: e3f85e65b073dcc41365068a3c29ccfb1ba180bc SHA-256: a951cf48f9a8dcdf7d1223174dcc6ea34d73880b6ce0bf40a731519862925545
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/aws?utm_term=p.a.c.e+program+in+elementary+school PDF link annotation
    • http://koprovk.xyz/direct_and_inverse_proportion_worksheets_grade_84q2cq.pdfIn PDF document text
    • https://wejerimaz.weebly.com/uploads/1/3/4/6/134648800/3370447.pdfIn PDF document text
    • https://cdn.sqhk.co/gefimiwotux/dC5hjif/remote_control_mini_rc_racing_boat_model.pdfIn PDF document text
    • http://xesebufawif.iblogger.org/5247702069.pdfIn PDF document text
    • https://nelubetif.weebly.com/uploads/1/3/5/3/135322580/4823621.pdfIn PDF document text
    • http://hotita.space/ornament_and_crime_manualel6cl.pdfIn PDF document text
    • https://xegoguvaposa.weebly.com/uploads/1/3/4/6/134677344/xepeneviduzur.pdfIn PDF document text
    • https://sikapekit.weebly.com/uploads/1/3/5/3/135317012/refofovoxuj.pdfIn PDF document text
    • https://cdn.sqhk.co/manigonodapu/bCKvxLm/digicel_phone_top_up_online_st_lucia.pdfIn PDF document text
    • https://cdn.sqhk.co/kikolibub/IgdyJjb/wogawitazofo.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/woxorojero/bike_racer_song.pdfIn PDF document text
    • http://zilatinevosageg.rf.gd/arena_di_verona_programma_2018.pdfIn PDF document text
    • http://najudugofuk.rf.gd/music_ballet_class.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/48467994120.pdfIn PDF document text
    • http://kesobikifa.epizy.com/bekefurowogomosixo.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_off0000cc22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC22 5480 bytes
SHA-256: 17497d34d2109f474dce14b6100ada6ec03bcd40b7f9d204e18aadc77b676a82
font_01_sfnt_off0000dea9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA9 10408 bytes
SHA-256: e30adec5b479d096c067a1d08d22c6b10fe9e91d1a83e2be38028740162c88c3