Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfa0950d91e140a1…

MALICIOUS

PDF

108.7 KB Created: 2021-03-03 03:42:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: d8d38a9403fce2311afccf7d258cc5dd SHA-1: 955b2981ecec46000d1c36c8bec2d5e0244bbab7 SHA-256: bfa0950d91e140a14db37093fde57c402709c14101d67621543312f8f3da1a88
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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=mechanical+engineering+definition+webster PDF link annotation
    • http://biomaniks.website/dapaxibakokatugd1vy.pdfIn PDF document text
    • http://romeital.space/surah_baqarah_full_in_arabicuj2cb.pdfIn PDF document text
    • http://jokeriz.22web.org/entry_level_mechanical_engineering_jobs_in_orlando_florida.pdfIn PDF document text
    • http://webmastervlad.ru/fireball_anime_20204ah7j.pdfIn PDF document text
    • http://inmyshtangen.xyz/teoria_del_estado_estacionario3tj0r.pdfIn PDF document text
    • http://tufilevazoropiz.iblogger.org/dunkin_donuts_iced_caramel_macchiato_nutrition.pdfIn PDF document text
    • http://lololoj.sportsontheweb.net/50976258057.pdfIn PDF document text
    • http://busimaderule.mywebcommunity.org/64463953566.pdfIn PDF document text
    • http://barojenixumaja.iblogger.org/jepalotekepaxuzis.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/tomaxade/39593476678.pdfIn PDF document text
    • https://s3.amazonaws.com/gajakelegeza/i_put_dryer_sheets_in_my_shoes.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/constitutional_convention_vocabulary_answer_key.pdfIn PDF document text
    • http://numapev.rf.gd/41129846418.pdfIn PDF document text
    • https://s3.amazonaws.com/fizufapu/porsche_boxster_ownership_costs.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/72507825709.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/cidco_lottery_2018_kharghar_online_form.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/75753874904.pdfIn PDF document text
    • http://gimokoso.epizy.com/axis_camera_application_platform_acap.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/codycross_group_42_puzzle_1_answers.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_off00016c15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16C15 5520 bytes
SHA-256: 78d3100af236a268671431245dde0ba60def51de582bec58007e34ba623f89e6
font_01_sfnt_off00017eef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17EEF 11292 bytes
SHA-256: 33bc44888cbc710c9a97f8419f2a01ca4c3d8efdfa867c5eea57ad08f84a816f

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