Malicious PDF — malware analysis report

Static analysis result for SHA-256 5307965aebd80db0…

MALICIOUS

PDF

76.1 KB Created: 2021-03-25 05:57:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63b436858e99a108bb950b5e2ad3b27f SHA-1: afab8d849ea1e76880f85581e72765fedb39e9b9 SHA-256: 5307965aebd80db0697f5cb1890c7ddeb889fc1f736e68a707d15bbbfae09b1d
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 malicious domain, likely intended to host a phishing page or download further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to exploit users by presenting a deceptive search result.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://dafemum.ru/aws?utm_term=how+is+free+will+described+in+the+bible
    • http://affilateapp.online/tixupoparuwixexobchl10.pdf
    • http://podarokinsta.online/mupadislxx2.pdf
    • https://cdn-cms.f-static.net/uploads/4404108/normal_6049d783b598e.pdf
    • http://gejesixave.scienceontheweb.net/sindrome_de_apnea_hipopnea_obstructiva_del_sueo.pdf
    • https://cdn-cms.f-static.net/uploads/4420449/normal_6019dab71ec82.pdf
    • http://nitiwopororotef.mypressonline.com/endangered_species_in_nigeria.pdf
    • http://midimox.getenjoyment.net/building_planning_and_drawing_textbook_download.pdf
    • http://lnstagramverifiedbadge-media.com/mixing_and_mastering_in_fl_studio_12am8xl.pdf
    • http://dejamorije.scienceontheweb.net/calendar_2020_malayalam.pdf
    • http://xisumagogali.getenjoyment.net/32322007484.pdf
    • http://lewuvumo.sportsontheweb.net/66646843621.pdf
    • http://dragonflysagewellness.com/zinuxusodomaxejoronemotu7dyvq.pdf
    • https://cdn-cms.f-static.net/uploads/4377381/normal_60533501d2d71.pdf
    • http://wiwajekirutiw.scienceontheweb.net/lobiraribixefe.pdf
    • https://static.s123-cdn-static.com/uploads/4415052/normal_5ff1c015a587f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/ganubifirigevi/holiday_stickers_app_android.pdf
    • https://s3.amazonaws.com/fusidejebi/arcade_machine_plans.pdf
    • https://s3.amazonaws.com/mubemutolewe/altivar_630_user_manual.pdf
    • https://s3.amazonaws.com/megodipewukitoj/acknowledgement_sample_for_report_doc.pdf
    • https://s3.amazonaws.com/watajive/tevexosakudemor.pdf
    • https://s3.amazonaws.com/fadadedezeker/28414993287.pdf
    • https://s3.amazonaws.com/jamuluvuvava/kowoxubamujimi.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_off0000ebb8.bin
22a59e992d3e900126d52823d9ceae81b596763337569c2229a7fa9116e7b41e
pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB8 5092 bytes
font_01_sfnt_off0000fd11.bin
d18cc3ae20279595420dc6ddd25f04961a3b5aab4477ff33c2a77a5ab2395eb8
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD11 11288 bytes