Malicious PDF — malware analysis report

Static analysis result for SHA-256 602d25f61283f5ef…

MALICIOUS

PDF

87.7 KB Created: 2021-04-07 17:07:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 5fdfe38e7622e40f0cadfbb28373f117 SHA-1: 9ff0192a72206d8e14bdf4c6e00f5846148cd521 SHA-256: 602d25f61283f5ef4f03c1c6659270f267bc3f78d6d75657bb9d898b5efe4749
104 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to host a phishing page or download a secondary payload. The presence of a 'download button' heuristic further supports a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://nipisod.ru/strik?utm_term=monier+crock+pot+slow+cooker+manual PDF link annotation
    • http://polystate.ru/orbit_1_output_port_digital_hose_end_timer_manual0pik2.pdfIn PDF document text
    • http://jaralet.getenjoyment.net/difference_between_1_phase_and_3_phase_induction_motor.pdfIn PDF document text
    • http://zivemigidefis.mypressonline.com/43602855406.pdfIn PDF document text
    • http://help-lnstagram-verifycopyrgiht.com/crackle_app_apk57nuu.pdfIn PDF document text
    • http://jowopejev.22web.org/47521585391.pdfIn PDF document text
    • http://arenaprobet.com/nitumikogexofaso4nc2f.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/1d845779-ad98-4ec5-abd6-768728063dec/40233805871.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/gelipesanusas.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/30766348249.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/xazirij.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/91279278653.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/skyscan_atomic_clock_instructions_model_87700.pdfIn PDF document text
    • http://ragigixo.epizy.com/capital_city_quiz_questions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/267e74dd-4835-4cd0-ad76-79f582d5d38e/belezimumemilabobe.pdfIn PDF document text
    • http://novogizeboje.myartsonline.com/fiszki_angielski_b1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71e0bd38-4214-4d81-8b9a-3841efbb0c09/4354157430.pdfIn PDF document text
    • https://s3.amazonaws.com/kotidox/the_prosperous_coach_used.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/guide_to_binge_watching_friends.pdfIn PDF document text
    • http://tozurome.epizy.com/22086371840.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/30338169858.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_off0001185a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1185A 5240 bytes
SHA-256: 0b367bee82fac39bd1db1ec2f4c033f6558a5316f4dbec76be192cb086476ca8
font_01_sfnt_off00012a39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A39 11620 bytes
SHA-256: 8db744bc90973a89ec8617d7a43bb907a46698034411defeffbbd6c41056a33b

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