Malicious PDF — malware analysis report

Static analysis result for SHA-256 66a06836e9d9fc83…

MALICIOUS

PDF

77.9 KB Created: 2021-01-21 18:48:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 6ea44ad0f55699f94f86f93207b88a3b SHA-1: c63fc942bbc9ee2c937bdd24e81259c23dcbc487 SHA-256: 66a06836e9d9fc83d76a60ba06ef9f60fbc05d462beadaceba617ee2edec833a
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to 'traffking.ru', which is a strong indicator of malicious intent. The PDF structure and embedded content suggest it is designed to trick users into visiting this external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffking.ru/123?utm_term=inverse+natural+log+in+r PDF link annotation
    • https://site-1175702.mozfiles.com/files/1175702/58903209055.pdfIn PDF document text
    • https://cdn.sqhk.co/junigofulum/Fjihhji/xulegovil.pdfIn PDF document text
    • https://site-1257587.mozfiles.com/files/1257587/aio_er_apk_apkpure.pdfIn PDF document text
    • https://site-1178312.mozfiles.com/files/1178312/sports_car_tracks_near_me.pdfIn PDF document text
    • https://site-1173584.mozfiles.com/files/1173584/download_mediamonkey_gold_full_version.pdfIn PDF document text
    • https://cdn.sqhk.co/wotezowedo/2Tiaiet/musical_rumble_strips_holland.pdfIn PDF document text
    • https://cdn.sqhk.co/baxorurifina/gjTSu5J/tovemam.pdfIn PDF document text
    • https://site-1173293.mozfiles.com/files/1173293/ketom.pdfIn PDF document text
    • https://cdn.sqhk.co/jakadamalate/eFhjUJz/34676744050.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fapibudu.epizy.com/risk_management_steps.pdfIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/wibowavafivavijulovujez.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/41394774016.pdfIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/16760613438.pdfIn PDF document text
    • https://s3.amazonaws.com/zafirawit/37198167244.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/96700138960.pdfIn PDF document text
    • http://namerunu.rf.gd/alfa_laval_sru5_pump_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/high_density_polyethylene_sheets_calgary.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/difarofob.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_off0000efcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFCD 4852 bytes
SHA-256: 80635b02d03d61dbc8235a42b90c90698907d370c18499b9afb25a644efa06e8
font_01_sfnt_off00010064.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10064 11948 bytes
SHA-256: d94b9a193e2244a4b8a5cd0420f611a80939fe2e55b0523be18e48d1b6ffa74c

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