Malicious PDF — malware analysis report

Static analysis result for SHA-256 01661243a3e0d508…

MALICIOUS

PDF

65.0 KB Created: 2021-02-10 21:11:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: b128bac008fa79a281da736a9a04b01c SHA-1: 55de32d2f8affad25282b402a054d80be0beec98 SHA-256: 01661243a3e0d508d7ee459c1c0d0bdb4bb21fb3081d8601be2be51a6e4ba573
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'word whizzle famous jazz musicians answers', which is likely a pretext to disguise the malicious nature of the link.

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://jottigo.ru/123?utm_term=word+whizzle+famous+jazz+musicians+answers PDF link annotation
    • http://gedoviduge.iblogger.org/switzerland_visa_application_form.pdfIn PDF document text
    • http://wavakuxakuxom.66ghz.com/xegujawitetovux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488141/normal_601e655026e5b.pdfIn PDF document text
    • http://tegogufe.22web.org/como_acceder_a_icloud_desde_un_android.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457881/normal_6000f37e28304.pdfIn PDF document text
    • http://vemafenuxaj.22web.org/2006_cadillac_srx_repair_manual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376374/normal_5ff111769d756.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ragigixo.epizy.com/95838530678.pdfIn PDF document text
    • https://s3.amazonaws.com/rutufokedizon/55378006757.pdfIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/autocad_2017_64_bit_trial.pdfIn PDF document text
    • http://ligumawi.epizy.com/long_division_worksheet_grade_6.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/38998466696.pdfIn PDF document text
    • http://vizulubafaxal.epizy.com/4th_grade_common_core_standards_math_worksheets.pdfIn PDF document text
    • http://tunowik.epizy.com/38115290216.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/11449894722.pdfIn PDF document text
    • https://s3.amazonaws.com/damerirazib/dwarf_fortress_beginners_guide_2018.pdfIn PDF document text
    • http://vegigekud.epizy.com/minecraft_walls_map.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_off0000c2f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2F3 5492 bytes
SHA-256: 00c8704566417dfb47c5b1047b2586af5ed3f90fb705407f8ee5fc74ae2c0b07
font_01_sfnt_off0000d59c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD59C 9772 bytes
SHA-256: ceee174bac3e63c1ec7359d433d172611033083820d4cac36862354b5bd70ec6

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