Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d134f056169e3b1…

MALICIOUS

PDF

77.3 KB Created: 2021-03-27 16:20:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: f6a25fea7258dfdb7b0d84ae6ca04ab3 SHA-1: c41c270786022d4636db9fa666f469191811eda9 SHA-256: 2d134f056169e3b1fe61e2a6055cf4c43ab5108e05e6b1ca7656d8f39b8b4778
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://golowaki.ru/award?keyword=big+data+processing+in+cloud+computing+environments+pdf PDF link annotation
    • http://fofifokese.iblogger.org/90394575996.pdfIn PDF document text
    • https://cdn.sqhk.co/liwifetil/j4vvejb/best_ringtones_free_download_telugu.pdfIn PDF document text
    • http://reduslim-shop.site/what_does_a_navy_protocol_officer_do15ekx.pdfIn PDF document text
    • http://cccckkkkkdd.space/gabidebipedabidaj3ql1q.pdfIn PDF document text
    • https://cdn.sqhk.co/pibusupi/gejfjcO/xakenofexokimatidepebesu.pdfIn PDF document text
    • http://tipografiyav.moscow/432188682697wfaf.pdfIn PDF document text
    • https://cdn.sqhk.co/xolofiwano/jgguihn/fantasy_wars_game.pdfIn PDF document text
    • http://jatulusejeb.iblogger.org/bolt_action_rules_errata.pdfIn PDF document text
    • https://cdn.sqhk.co/vefapatape/P3ijjau/20166179224.pdfIn PDF document text
    • http://kulokozataxat.22web.org/information_asymmetry_theory.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/mefadedosuw/bat_full_form_in_obg.pdfIn PDF document text
    • https://1df32be7-5e6a-491e-80e4-5c558052ef26.filesusr.com/ugd/e02e08_8fda3abea1214b818bfa8961a2283aaa.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/67203d31-77b8-4182-9e00-7cd07da26b9f/gupobogivuwexujowu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6fadbf4-76c4-4588-a955-c3c9af3aedb4/89337066083.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/windows_10_usb_flash_drive_format.pdfIn PDF document text
    • https://1e16f6d7-285b-4488-bf07-d3e24ac90e20.filesusr.com/ugd/417718_1c64ea1f1bb04511801f99063931aeca.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/leluxajibirume.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b6f751b-e1d6-48a3-ad04-5e9b9cd02be4/xivodofegisal.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/driver_wireless_acer_aspire_e5-_411.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/alberta_blue_cross_forms_for_reimbursement.pdfIn PDF document text
    • http://rinifujojutot.epizy.com/what_are_the_side_dishes_at_el_pollo_loco.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_off0000ef38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF38 5584 bytes
SHA-256: 458f41970bc2c1b943ce01f2a9bcbf8a5ec89e1c17f12a2836b7cbeefa03ed39
font_01_sfnt_off00010230.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10230 10868 bytes
SHA-256: 46e2e02024572e83524a28c14d82904ad5c358b1aae797e7877934cb8bf21598

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