Malicious PDF — malware analysis report

Static analysis result for SHA-256 f714f8e52131eb21…

MALICIOUS

PDF

71.8 KB Created: 2021-04-18 21:49:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 03b6b0bbd210425edeabfb01080ad0f5 SHA-1: 501fd7515f1a25fa0332a4007d1f037a7bf70375 SHA-256: f714f8e52131eb21ea945728b6ba8aa8286abf339a25d951a3ce7185ee11f82e
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a high heuristic firing for an embedded external URI. The document body, though heavily obfuscated, contains text that could be interpreted as a lure. The embedded URL points to a suspicious domain, suggesting it is the primary mechanism for payload delivery or phishing.

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=easy+tajweed+rules PDF link annotation
    • http://copalofa.site/94621916861dp0jo.pdfIn PDF document text
    • http://maturibcgj.space/kupaginidixesututadx9er.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xomonorud.rf.gd/gusif.pdfIn PDF document text
    • http://jarujoburisuw.rf.gd/nenojepokosadopotu.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/will_there_be_dark_souls_4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25e7b6f0-f320-4c8a-8c21-5eae80e77405/how_to_make_multiple_streams_of_income_in_nigeria.pdfIn PDF document text
    • https://s3.amazonaws.com/kuboki/xibudisarusotek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4351e86-4ec6-459a-a4d1-fee609bce7f2/how_to_make_a_health_and_safety_plan.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/avr_studio_4_mac.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c75ebba-a449-4d07-a7ee-126ed5f0f120/how_to_calculate_business_tax_in_the_philippines.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/unreal_marketplace_submission_guidelines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecf9e227-4cd2-4a90-9adc-ca263afde979/cloud_computing_certification_training.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bae7b6ab-f4e1-4c90-8ee1-ea03ef59235b/bioflix_activity_cellular_respiration_and_photosynthesis_energy_flow.pdfIn PDF document text
    • http://kefujamulewim.epizy.com/87929591199.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae22ab1d-cb34-4ec7-8122-07205c1bb6fc/48317957531.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/business_development_specialist_interview_questions_and_answers.pdfIn PDF document text
    • http://kixexagejo.epizy.com/ice_cream_instrumental.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/how_does_girl_interrupted_end.pdfIn PDF document text
    • http://lovigolowolo.rf.gd/72307421360.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/21787813144.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_off0000de25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE25 5048 bytes
SHA-256: 7824d41cf56c16704b3ef7ba28f8981a1f95d4a22e1ce2a7f63eb88b34f76d62
font_01_sfnt_off0000ef7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF7A 10244 bytes
SHA-256: d6a34acc77ad35e2c2edf76f9ad0845a5befce44156eeda8dd18a81a05d7607a

Open this report in the interactive analyzer, or submit your own file for analysis.