Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ecfb7ad63c60590…

MALICIOUS

PDF

77.2 KB Created: 2021-02-24 10:09:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 184cbf3a9c83dda95e6cef0b52977420 SHA-1: e8422033f77792a4c2ad325fa947e6d2482e22ce SHA-256: 6ecfb7ad63c6059097e326336b33b2fb9f3da2154413cb5a51632bf68fd5131b
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 URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'video series answers'.

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://bologen.ru/wix?keyword=questions+for+video+series+eyes+on+the+prize+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4467576/normal_5ff0edf4b0d60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484990/normal_5fd71cb3c41f9.pdfIn PDF document text
    • https://nikamajavefuxo.weebly.com/uploads/1/3/1/0/131069808/ab339b6d87.pdfIn PDF document text
    • https://xidumalebuwun.weebly.com/uploads/1/3/4/8/134894794/mibozewokizawu.pdfIn PDF document text
    • http://supanigavig.iblogger.org/20331925598.pdfIn PDF document text
    • http://xuxugagutosi.iblogger.org/instagram_image_chrome.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490380/normal_6002e608d72cf.pdfIn PDF document text
    • https://mujiborabasovu.weebly.com/uploads/1/3/4/5/134590634/famokibakafeso.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488322/normal_5febde03b9cb8.pdfIn PDF document text
    • https://bomaripuxizidul.weebly.com/uploads/1/3/4/9/134901287/ca15c348347.pdfIn PDF document text
    • https://danodukuwen.weebly.com/uploads/1/3/1/6/131637043/xukoke_potagabebis.pdfIn PDF document text
    • https://najatiruz.weebly.com/uploads/1/3/0/7/130738831/28ab490669a3966.pdfIn PDF document text
    • http://ruwaxidalemib.iblogger.org/vikonodiwaz.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/pizivurapab/compare_and_contrast_worksheets_high_school.pdfIn PDF document text
    • http://zowujobosega.rf.gd/33640525270.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/busy_busy_song_mr_jatt_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/navoburarovada/registration_form_template_html_code.pdfIn PDF document text
    • http://supapimegem.rf.gd/icloud_for_pc_windows_xp.pdfIn PDF document text
    • http://dukizovisepo.rf.gd/musivu.pdfIn PDF document text
    • http://pomagupivedib.epizy.com/subtracting_decimals_worksheets_year_5.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/archery_king_mod_apk_1._0._30.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_off0000f00e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF00E 5460 bytes
SHA-256: 222d9eafb5775a2fecf083af1e4a3b783715de45b641b1da3725f84d80080749
font_01_sfnt_off000102bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102BF 10456 bytes
SHA-256: d051e52c21519db76caaf487a84da206b1c7ffe11ccfb8f008b4207f26b65227

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