Malicious PDF — malware analysis report

Static analysis result for SHA-256 d95a25d79cadc004…

MALICIOUS

PDF

75.8 KB Created: 2021-03-21 22:37:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: dcea804b065aac2ac09023347163ded9 SHA-1: 57d5645d607aa3018f13c819c34f3c7613cec843 SHA-256: d95a25d79cadc004f2066c1083f8dcf5b1f2576cf8840f5fce6f06d1d3633127
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, with a specific detection of 'Pdf.Phishing.Trojan'. It contains an embedded URI pointing to 'https://seumenha.ru/wix?keyword=cocodrilo+mas+grande+del+mundo+record+guiness', which is likely the intended destination for a phishing or scam attempt. The document body, though heavily obfuscated, contains text related to the URL's keyword, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/wix?keyword=cocodrilo+mas+grande+del+mundo+record+guiness PDF link annotation
    • https://cdn.sqhk.co/xolanikipiz/gdat2gg/my_beloved_crowder_espanol.pdfIn PDF document text
    • https://towelekuw.weebly.com/uploads/1/3/1/4/131406253/xazibejukumuvo.pdfIn PDF document text
    • https://cdn.sqhk.co/goxupolofodi/hglqAse/pojazofevozoledoxe.pdfIn PDF document text
    • https://begagezegitajaj.weebly.com/uploads/1/3/1/3/131398046/tepetali.pdfIn PDF document text
    • https://retevewaluwur.weebly.com/uploads/1/3/4/6/134600892/siluzobavap.pdfIn PDF document text
    • https://bodonovovo.weebly.com/uploads/1/3/1/6/131607174/55a4f3d6e.pdfIn PDF document text
    • https://cdn.sqhk.co/kavejufa/b7GCRhi/52344336884.pdfIn PDF document text
    • https://vudefuzafovafid.weebly.com/uploads/1/3/4/6/134630521/finuzajedefisiralij.pdfIn PDF document text
    • https://cdn.sqhk.co/sebixodof/Bm6ehi6/traffic_racer_cheats_apk_android.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/45418162-f21d-4fbb-ae1e-6daff00f1a10/qu_tipo_de_sistema_de_informacin_gerencial_debera_tener_la_organizacin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f40da250-ee35-4fee-889e-55b594ccea21/ronawi.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/wisezedepagefu.pdfIn PDF document text
    • http://gapojegutebu.rf.gd/30603735905.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/xowoxoneloweridiforojeso.pdfIn PDF document text
    • https://s3.amazonaws.com/vosimalume/wibexun.pdfIn PDF document text
    • http://ziresam.rf.gd/eucalyptus_origins_sheets_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1b1ef37-ff97-4264-8c72-442ff5d8d2ba/extraordinarias_mujeres_de_la_biblia_gratis.pdfIn PDF document text
    • http://witopovuketoj.epizy.com/home_design_drawing_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/35491742146.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/movie_tamilrockers_app.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_off0000e71c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE71C 5164 bytes
SHA-256: e97bb50539dadd1c3b67360ff2354ef7c71d1205210284f3e15f16bf1a82b6f3
font_01_sfnt_off0000f886.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF886 12068 bytes
SHA-256: cdd396ee52980a9cbe5a71708396373e0426c1ebc4f0dbe0d1c77c2570dc8615

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