Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8cbd887f66988f2…

MALICIOUS

PDF

73.5 KB Created: 2021-03-06 22:24:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f495ed76f8867dfaf8c24c85fe9b4087 SHA-1: 9b239c25965616590bbc900bc37521c44d3b69c1 SHA-256: a8cbd887f66988f2ea7a256eefa556c1354c714c243d360ba72ab9a87e1989e4
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains keywords related to a dishwasher reset code, suggesting a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ponafet.ru/123?utm_term=whirlpool+gold+series+dishwasher+reset+code
    • https://cdn.sqhk.co/wixefawoz/hdAibgg/free_movies_online_no_sign_up.pdf
    • https://cdn.sqhk.co/pigexebobe/myifajc/mx_player_for_pc_apkpure.pdf
    • http://bukenisefino.mygamesonline.org/how_to_maintain_daikin_air_conditioner.pdf
    • http://likefetevu.getenjoyment.net/71254927156.pdf
    • http://pekefosijemibi.sportsontheweb.net/zukes.pdf
    • http://ketaton.mywebcommunity.org/69888058204.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gezizefefififa/1093405683.pdf
    • https://s3.amazonaws.com/bofake/lutimuwubibigarukos.pdf
    • https://s3.amazonaws.com/jolituzoji/lagu_cakra_khan_butiran_debu.pdf
    • http://dijuvunote.onlinewebshop.net/82550779452.pdf
    • https://s3.amazonaws.com/mejados/70256337514.pdf
    • https://uploads.strikinglycdn.com/files/38e14062-c996-42ef-9675-651a12950c8b/napivexuvagojedev.pdf
    • https://uploads.strikinglycdn.com/files/33a919dc-65a4-4246-8228-5d8f6d99abc0/texto_expositivo_de_estructura_problema_solucion.pdf
    • https://s3.amazonaws.com/zuwimadaneb/jelomexigi.pdf
    • https://s3.amazonaws.com/libosokune/lipexejonitatuwomebagur.pdf
    • https://s3.amazonaws.com/wivunonovef/6th_grade_printable_math_worksheets_algebra.pdf
    • https://s3.amazonaws.com/selivuvumepaveb/34687247819.pdf
    • https://s3.amazonaws.com/rufonali/nudugalutopo.pdf
    • https://uploads.strikinglycdn.com/files/fb641521-a43d-438d-bd62-dade919414d3/dewalt_miter_saw_clamp_dw713.pdf
    • https://s3.amazonaws.com/lekelepowo/fuwunezuxoreli.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_off0000e238.bin
67867813deceff145ce9e8eff62af7274cb9a7927841c4661f872d4c9621b5d6
pdf-font-stream PDF embedded font (sfnt) at offset 0xE238 5440 bytes
font_01_sfnt_off0000f4cb.bin
52dc982c1003942b0492529404b9715807ff60dcf4fa6933e7c956e31ccb034f
pdf-font-stream PDF embedded font (sfnt) at offset 0xF4CB 10376 bytes