Malicious PDF — malware analysis report

Static analysis result for SHA-256 724a0bf4fd49dfcc…

MALICIOUS

PDF

84.8 KB Created: 2021-02-17 10:50:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 26b3c3ca1e384d750afc4ce4be49f27a SHA-1: 636928936e49d4edb39dfba52851f43b557167b5 SHA-256: 724a0bf4fd49dfcc75c8e5abd0c4a7f290cc669ce5028d56ca85ec2a861f3d99
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to 'dream dictionary snake bite right foot', aiming to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/strik?utm_term=dream+dictionary+snake+bite+right+foot PDF link annotation
    • http://shoop-fl.ru/pharmaceutical_dosage_forms_capsuleshh6l5.pdfIn PDF document text
    • https://zuwiliwiwira.weebly.com/uploads/1/3/1/0/131071082/torola-seramoxuzolupok-memakup-jetegemevud.pdfIn PDF document text
    • https://cdn.sqhk.co/malevevipali/hygjgcd/detention_officer_jobs_hiring_near_me.pdfIn PDF document text
    • http://ru-en.xyz/installation_et_configuration_active_directoryrq4fm.pdfIn PDF document text
    • http://ek-arenda.ru/chrisette_michele_songsyuqlw.pdfIn PDF document text
    • https://cdn.sqhk.co/laripikiwafo/bgcjjhc/26789735507.pdfIn PDF document text
    • http://vinnipoh.space/wiramigusiru4fj69.pdfIn PDF document text
    • http://salonhq.xyz/55348530281qt6ng.pdfIn PDF document text
    • http://microdigitalmeter.xyz/6572335420iml0s.pdfIn PDF document text
    • https://cdn.sqhk.co/bixatavafut/UWASkBM/daily_planner_app_windows_10.pdfIn PDF document text
    • https://kapupidaxor.weebly.com/uploads/1/3/5/3/135386814/tibovalugoz-fuboxoresivab.pdfIn PDF document text
    • https://rukufutuseju.weebly.com/uploads/1/3/4/7/134748195/7945696.pdfIn PDF document text
    • http://digitalliteracyinstitute.com/leatherworking_classic_guideftjof.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/getizar/aerosmith_greatest_hits_zip.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/wekawexuxufuguf.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/coreldraw_software_for_windows_8._1.pdfIn PDF document text
    • http://jidoxib.rf.gd/tovugesetetalarozularizot.pdfIn PDF document text
    • http://rifimazagajide.epizy.com/how_long_is_the_ccna_200-301_exam.pdfIn PDF document text
    • https://s3.amazonaws.com/bodajaku/kinidarunadi.pdfIn PDF document text
    • http://rokevibe.epizy.com/39045290376.pdfIn PDF document text
    • http://rogofijanititad.epizy.com/tufivekobas.pdfIn PDF document text
    • https://s3.amazonaws.com/sosupejuxofedo/jakesuko.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_off00010f37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F37 5708 bytes
SHA-256: b71277b8dc07ef5536115f40b9a63884cc07d02f01d4066be91e10238d83c204
font_01_sfnt_off0001228e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1228E 10228 bytes
SHA-256: 3c5e5294342269149621b68ab1d565e7ea04907196e132fde7956c981d624acf

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