Malicious PDF — malware analysis report

Static analysis result for SHA-256 d742f762387d2d6f…

MALICIOUS

PDF

76.9 KB Created: 2021-04-18 17:48:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 79435515f1944f0c5fd67c12ec273354 SHA-1: 80a568bd44b740463a60da1e63fb31980f33dd0a SHA-256: d742f762387d2d6fa1d48ff256182577e3c3e351f449980b80857b26107eb687
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document body, though heavily obfuscated, contains a URL that appears to be a lure, disguised as a search result. This URL likely leads to a phishing or malware distribution site.

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/strik?utm_term=boy+scout+popcorn+nutrition+facts PDF link annotation
    • https://wukelefitifaka.weebly.com/uploads/1/3/4/8/134882985/7792574.pdfIn PDF document text
    • http://raisinslabs.club/1090310761ovek6.pdfIn PDF document text
    • http://xuzotudaraderuf.mypressonline.com/hungarian_assignment_method.pdfIn PDF document text
    • https://fopudodesesiwen.weebly.com/uploads/1/3/4/3/134344932/1184848.pdfIn PDF document text
    • http://guitar.su/guion_para_medios_audiovisuales_maxipuuv3.pdfIn PDF document text
    • https://fisokifife.weebly.com/uploads/1/3/4/3/134340906/bupufadevaketu.pdfIn PDF document text
    • http://zememor.sportsontheweb.net/sitom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://bitines.myartsonline.com/capresso_infinity_plus_conical_burr_grinder_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/gafudodediguwiru.pdfIn PDF document text
    • https://5548a280-a194-4776-8019-0e256783c1fa.filesusr.com/ugd/f2c1dc_7a9e17a742ea40c49cadc1d890234f06.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kofabube/xapikesitonu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6633ad4-f899-41de-b7e3-0cde5046c4a0/sokowerukepovozovov.pdfIn PDF document text
    • https://s3.amazonaws.com/kosamupim/stock_aging_report_in_sap_abap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a579db5f-4981-4bbc-98f6-41231fba560d/data_manager_salary_nyc.pdfIn PDF document text
    • https://4f640d82-8365-4c22-93d6-dbd3427c3fb0.filesusr.com/ugd/55e8b7_4f5687b7d6c34b6790e0af454bca988c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fajixe/total_audio_video_converter_software_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/733e1daf-3dbb-4552-a134-63f9cf9efc83/99146825079.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e438.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE438 4892 bytes
SHA-256: 74375341a2981bab7afa99b325ac9ab4e293e1af1b0ea5a210b55c987e24f694
font_01_sfnt_off0000f4eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4EB 10336 bytes
SHA-256: ab30b02de49708fb397cebd9af4abae07c75771841957876647eaff773511e25
font_02_sfnt_off0001184c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1184C 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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