Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f6b83cd29f0de1d…

MALICIOUS

PDF

156.2 KB Created: 2021-03-25 02:44:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 555460be1e721ce378fe2ce02e96abd4 SHA-1: d0ba34c2ca0799e3d546657525d9cbf7b3828b8b SHA-256: 1f6b83cd29f0de1d43b6ad4ab59e01b1f5c37ca0135380531622dea12c8a4cdd
144 Risk Score

Malware Insights

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

The PDF contains heuristics indicating an advance-fee scam lure and urgency, suggesting the document's purpose is to trick the user into clicking a malicious link. The ML classifier strongly flagged this PDF as malicious. The primary malicious URL identified is https://gimoguvi.ru/strik?utm_term=2019+tesla+model+3+long+range+mileage, which is likely part of the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://gimoguvi.ru/strik?utm_term=2019+tesla+model+3+long+range+mileage
    • http://lebuvowune.getenjoyment.net/mobifitadu.pdf
    • https://bufibetotireguk.weebly.com/uploads/1/3/0/7/130739935/xijurotapid-jifizor.pdf
    • https://nazoxuja.weebly.com/uploads/1/3/2/8/132814973/jimagigi.pdf
    • http://bunutib.mywebcommunity.org/wizezaziboxaxokixa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/15ef8903-a48d-4bcd-a516-99c34475ceba/que_es_los_signos_de_puntuacion_y_entonacion.pdf
    • https://uploads.strikinglycdn.com/files/4b107c75-d4b5-48c6-9806-cf87628ea49d/sony_hdr_cx240_camcorder_review.pdf
    • https://uploads.strikinglycdn.com/files/1f2d44d7-9638-4d0f-a214-3898e2a33c70/where_is_the_cave_of_ashab_e_kahf_located.pdf
    • https://uploads.strikinglycdn.com/files/16cd9d77-5922-4275-a9f2-bb90071567de/sapuzemulobezaduxado.pdf
    • https://uploads.strikinglycdn.com/files/c782493f-f28d-495d-9963-78ddd6ac1a32/ronobevatapa.pdf
    • https://uploads.strikinglycdn.com/files/50dce415-8496-4bac-9b49-c2d38e069197/prestige_alarm_aps997e_manual.pdf
    • https://uploads.strikinglycdn.com/files/b0d461f5-0aff-4a4f-a2f2-0f05bf3aaa75/how_to_download_minecraft_java_edition_for_free_without_tlauncher.pdf
    • https://uploads.strikinglycdn.com/files/1908b6cd-917f-4c76-a6bb-9f8d1cb78a58/sejufog.pdf
    • https://s3.amazonaws.com/kefefetafij/33717739402.pdf
    • https://uploads.strikinglycdn.com/files/2ec62390-39e9-4988-be53-ebb6bf004341/how_to_fix_melnor_water_timer.pdf
    • https://s3.amazonaws.com/nupotukig/vesogodekog.pdf
    • https://uploads.strikinglycdn.com/files/7f723aea-8651-43e9-b162-bc0e0aec6311/whirlpool_gold_dehumidifiers.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00020fa3.bin
15736ff7bf61c190bbbd0c92cd399cc2450b54fad4266b62406d4e7eabed2217		 pdf-font-stream PDF embedded font (sfnt) at offset 0x20FA3 5696 bytes
font_01_sfnt_off000222e3.bin
4203769ae66109ed0d11be155fa5b6b2b089bdff055b5954522754f491d55785		 pdf-font-stream PDF embedded font (sfnt) at offset 0x222E3 13700 bytes
font_02_sfnt_off00024f09.bin
3317e6babcc0cf9b2e3a95cb89288554dc7db0363d849948bb3b8746b4fa3cab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F09 16152 bytes

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