Malicious PDF — malware analysis report

Static analysis result for SHA-256 da0ff5807d66071e…

MALICIOUS

PDF

279.0 KB Created: 2021-03-31 16:13:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 560fd22a53f24df86c7a4da1cb0dc841 SHA-1: eda4a62ab4afd6135e12f9692233ef832112dc2d SHA-256: da0ff5807d66071e2c7b2d3071cb6a051ee94f55437aace82c75201fc18ab844
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by heuristics and ClamAV as malicious. The ML classifier also flagged the PDF with high confidence. While no scripts were extracted, the presence of external URIs suggests an attempt to redirect the user to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9667

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://botokaw.ru/123?utm_term=cheat+brigandine+legend+of+forsena PDF link annotation
    • https://cdn.sqhk.co/topazawu/ihxjcha/stick_fighter_unblocked_2_player.pdfIn PDF document text
    • http://citruss.space/apsara_aali_remix_kings_unitedn17oc.pdfIn PDF document text
    • http://rameautbxy.space/wewakafvb90.pdfIn PDF document text
    • http://bobejitamatu.iblogger.org/liftmaster_877max_compatibility.pdfIn PDF document text
    • https://cdn.sqhk.co/kigowabalo/gjH8jjG/lockheed_missiles_and_fire_control_locations.pdfIn PDF document text
    • http://takipleskazan.org/sex_positions_for_menstrual_cramps_imagesw5g4e.pdfIn PDF document text
    • https://cdn.sqhk.co/falugojafat/jejjgju/v_live_app_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd3525e1-e13a-440d-bd4a-8b28b9d5bfa5/zefez.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/40799640331.pdfIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/belgrano_river_promocion_formaciones.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e845bff0-8a8e-4a5e-9e1d-432129b38ddc/brother_sewing_e1_error.pdfIn PDF document text
    • https://s3.amazonaws.com/sejakopa/hepatitis_c_treatment_guidelines_uptodate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6adbff3b-307e-4e61-b656-a8f63b4459f1/zigexorabop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e9e69db-00cd-43e3-a953-a1f5e73107f0/brother_mfc_7340.pdfIn PDF document text
    • http://wovikoverule.epizy.com/jumble_answers_for_10_3_19.pdfIn PDF document text
    • http://ratimoli.epizy.com/bryan_adams_discography.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2aa44e9-1330-471c-9575-c90fd86c4466/57425551247.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18bdb238-5842-4291-bcb4-19f2b78ca146/studentlitteratur_english_grammar_check_appia.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/roridegowuwiza.pdfIn PDF document text
    • http://suwuxuk.epizy.com/23319573026.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b56cd424-286f-414c-bfcf-c35ce4cb69eb/wedogusiwisuwefefira.pdfIn PDF document text
    • http://xezipunefosipu.epizy.com/lizixumukuxab.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_off000413ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x413AE 5216 bytes
SHA-256: 6e5d3b3ed2b54ef747aaeaa160c6f12b9332653a61e08708ea51d9b94ca46b54
font_01_sfnt_off0004255d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4255D 11392 bytes
SHA-256: 439b7aaee00231c490be42adb1593aa55f58836ea007e7a3ee928ec5abede499

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