Malicious PDF — malware analysis report

Static analysis result for SHA-256 50ddc882a615fd86…

MALICIOUS

PDF

82.5 KB Created: 2021-04-11 08:10:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 8d3edf7ea95b6eb7ed1ba80095ca5e35 SHA-1: 7a78906d1713bfe94b5734379b5cfa9e44ee5b84 SHA-256: 50ddc882a615fd86c4c168568513ceddb828dcebc008681bd5ada9bfc28435fe
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for credential harvesting or malware distribution. The document body, though heavily obfuscated, appears to contain references to 'World of darkness fan games' and authoring information, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/strik?utm_term=world+of+darkness+fan+games PDF link annotation
    • https://cdn.sqhk.co/zanuvajebodu/haP6mjg/dragonvale_highest_breeding_times.pdfIn PDF document text
    • https://cdn.sqhk.co/xovatagemi/ijoheS8/jumikalesesejigitepirajig.pdfIn PDF document text
    • http://sinomefonok.mywebcommunity.org/bridging_the_gap_13th_edition_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/671d9deb-61d9-4918-9b2d-392ec449d911/mn_dmv_drivers_test_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ea7af5a-efcf-413a-92ff-6f51bcd8878e/ladawipudawopilagobuxixu.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/88296223494.pdfIn PDF document text
    • http://nevabaza.atwebpages.com/zikotopimojexaferirufavoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/881e4531-ccae-432e-8705-c48b260c9e8a/the_man_in_the_high_castle_season_2_episode_3_cast.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/tafukipura.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/element_compound_mixture_worksheet_high_school.pdfIn PDF document text
    • http://setovoj.onlinewebshop.net/22768055179.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35801a45-8277-42c3-9c14-2c37d8571d48/pujemagalebuno.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/tetaruxijegafufij.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/dd_monster_manual_3.5e.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b034b86-2fd7-479f-9432-59fa507d22f4/nabuwetiwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65b8ddb7-d3f4-456b-ab86-484ef919552f/ripejosaxedunoputajelune.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/car_loan_emi_calculator_excel_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64fe265e-7bd9-4d1d-a657-39db048f3cc4/jomizofuzomosisibosiparo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14cce672-00b6-4994-9c4e-509a709bc3ea/how_to_program_433_remote.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/chiari_malformation_diagnosis_criteria.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/rasevur.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f903.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF903 4964 bytes
SHA-256: bc5272778486a75b006ae1c884edcec7969349a621b7f1f16343f594b1d12467
font_01_sfnt_off000109d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109D8 10616 bytes
SHA-256: 2166caefefff8f415fdc85cb5bc763ff4862978d597c076584f0b9ef354eef3b
font_02_sfnt_off00012e4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E4C 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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