Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3c1955018e5e7e5…

MALICIOUS

PDF

72.8 KB Created: 2021-02-19 19:40:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e69c3bb62f12e1239946287d57f9a519 SHA-1: 35aa397c68be1c7656bdfa6d56493b510b577378 SHA-256: e3c1955018e5e7e50c56814978d79b70e7898f3f382ffc9a964bec9df7613508
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a critical detection signature indicating it is a Pdf.Phishing.Trojan. The embedded URL points to a suspicious domain, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/123?utm_term=what+kind+of+transmission+fluid+does+a+2000+honda+odyssey+take PDF link annotation
    • https://xifupanudolegu.weebly.com/uploads/1/3/1/1/131164204/9400922.pdfIn PDF document text
    • https://tomovomat.weebly.com/uploads/1/3/4/6/134617768/8706768.pdfIn PDF document text
    • http://gabixumupa.22web.org/supply_chain_management_certification_coursera.pdfIn PDF document text
    • http://espaceclient-cmb.com/landice_l7_treadmill_for_saleqxhxz.pdfIn PDF document text
    • http://requiremcgood.com/82295098984jcng1.pdfIn PDF document text
    • https://godewofevi.weebly.com/uploads/1/3/2/8/132814364/662a6ef8958e.pdfIn PDF document text
    • http://gosologesegob.iblogger.org/will_baby_steps_get_a_season_3.pdfIn PDF document text
    • https://mivezariwib.weebly.com/uploads/1/3/4/5/134582287/rimomag.pdfIn PDF document text
    • http://domavera.ru/10209046191d4h3e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jasigobup.epizy.com/horse_racing_3d_game.pdfIn PDF document text
    • http://rubujizuz.epizy.com/high_level_business_requirements_document_template.pdfIn PDF document text
    • http://terojujulemon.rf.gd/best_android_weather_app_uk_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/90449972015.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/wopar.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/gaxag.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/gojulawekotanoliligameg.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/aplikasi_bobol_wifi_di_laptop.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_off0000ddbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDBD 5600 bytes
SHA-256: 0fac5f98b10af7ed3e084235ea58517a931d87f351fa63df582cdbe2b4291968
font_01_sfnt_off0000f0b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B4 11048 bytes
SHA-256: 5fe901710fd09101b1c5b6d30e9c34a251c0f84c5939fa6aabadb58e1f207cae

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