Malicious PDF — malware analysis report

Static analysis result for SHA-256 4caecb9fc4a0058e…

MALICIOUS

PDF

82.8 KB Created: 2021-03-01 10:18:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 35cd355d615e6d1a9cf2d3ec285944fb SHA-1: 670bf05fe75264baf5fa525d3f527ec93c1467f4 SHA-256: 4caecb9fc4a0058e66f2434bf1b024469a8cfa094238477ff4479ca105617dd5
96 Risk Score

Malware Insights

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

The PDF file 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, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains text related to 'Dewalt drill bits at lowes', suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/award?keyword=dewalt+drill+bits+at+lowes PDF link annotation
    • http://momentikshop.space/puntos_craneometricos_del_craneo9cq3k.pdfIn PDF document text
    • http://remont-kholodilnikov.website/bebufoejnvh.pdfIn PDF document text
    • http://importants.space/62954560264zil03.pdfIn PDF document text
    • https://cdn.sqhk.co/majumoros/hbjeihx/74250761002.pdfIn PDF document text
    • https://cdn.sqhk.co/gudopokobipa/jSYjdih/73161366410.pdfIn PDF document text
    • http://betmoy57.com/aaa_logo_maker_crack0vy9z.pdfIn PDF document text
    • http://specrazreshenie.com/nautical_almanac_download6u58d.pdfIn PDF document text
    • http://antonioit.space/39300205340g50q9.pdfIn PDF document text
    • http://optarfes.com/mekibufazujefatofaxuv79vdm.pdfIn PDF document text
    • http://xubanapirobula.mypressonline.com/notukazefesixiwap.pdfIn PDF document text
    • http://hargotel.xyz/how_to_drive_manual_instructionszttio.pdfIn PDF document text
    • https://cdn.sqhk.co/baxorurifina/NCjdx0X/game_recorder_for_pc_no_watermark.pdfIn PDF document text
    • http://indital.space/manual_de_sobrevivncia_escolar_do_ned_assistir_online_dublado_grtisfdsos.pdfIn PDF document text
    • http://sosyaltakipcipanelin.com/kadafulutozeqfdo3.pdfIn PDF document text
    • https://cdn.sqhk.co/wizokawoxo/bx0tcDj/schema_electrique_d_un_alternateur.pdfIn PDF document text
    • http://domavera.ru/lukujumuranabozamamepk9.pdfIn PDF document text
    • http://wapadax.scienceontheweb.net/wigizisobunasaxerozebo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wujodibu/how_to_make_easy_homemade_peel_off_face_mask.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/attorney_engagement_letter_template.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/xawoden.pdfIn PDF document text
    • https://s3.amazonaws.com/fifuto/44109906253.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_off000106ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106FF 5048 bytes
SHA-256: 750baf451dd6413edf0f3582a0d8c92bb2b7846d1d7c730a9d1baaa9f11701c1
font_01_sfnt_off00011848.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11848 10920 bytes
SHA-256: d61bd5c5b9f27a05e0a39ed60c8336d46a281a446861e0109b6ac34a4226521a

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