Malicious PDF — malware analysis report

Static analysis result for SHA-256 46bd46189b922571…

MALICIOUS

PDF

369.2 KB Created: 2021-04-19 01:46:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 9c992498dee968a7c5c36c162a08b2ee SHA-1: d36dec13bc0d32b4f6bfb433e197315aa76f24d7 SHA-256: 46bd46189b92257162e776102198c85b922e9a02b756f2e637f3a72da8b97d13
162 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'dafemum.ru'. The document body, though heavily obfuscated, contains text related to 'Beth moore breaking free workbook answers' and mentions urgency, aligning with phishing lures. The presence of embedded URLs and the ML classifier's high confidence score further support a malicious intent, likely to redirect users to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9417

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://dafemum.ru/strik?utm_term=beth+moore+breaking+free+workbook+answers In PDF document text
    • http://gugolufixa.mywebcommunity.org/anti_inflammatory_diet_dr_weil.pdfIn PDF document text
    • http://kidiwutimako.mygamesonline.org/analog_oscilloscope_vs_digital_oscilloscope.pdfIn PDF document text
    • http://obuv-kozha.ru/the_bluest_eye_summary_of_each_chapterv9xwg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405409/normal_60301be4d1031.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386852/normal_6064da6102413.pdfIn PDF document text
    • http://xijonofupawulo.mypressonline.com/audiovisual_translation_book.pdfIn PDF document text
    • http://gumidaz.medianewsonline.com/bursite_genou.pdfIn PDF document text
    • http://sberin.xyz/world_war_game_download_freec4jqz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475727/normal_606201958c243.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452621/normal_5ff2c327d4438.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415544/normal_6007bd77783c8.pdfIn PDF document text
    • http://kino-vezde.ru/nawaweguzotisewitigal5kext.pdfIn PDF document text
    • http://creampiepow.club/mexifodoziwanujepedepiss3ja7.pdfIn PDF document text
    • http://matcobzor.ru/vekufefopupofonepbpi9.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/wupuxus/european_cardiology_guidelines_hypertension.pdfIn PDF document text
    • https://3f735f5a-cd1c-4288-bd93-adeff6e084d9.filesusr.com/ugd/bcc0e4_e5bcbeb90ba142b99125142d19674632.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/5448863734.pdfIn PDF document text
    • https://9c789f27-b70c-4c9d-9e83-211ee8f99b38.filesusr.com/ugd/bdeb4c_323ed250ad16452fb3765629a8490f72.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gimisorixosu/data_architect_resume.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/97244944495.pdfIn PDF document text
    • https://s3.amazonaws.com/vavebufevodutob/mssql_am_pm_time_format.pdfIn PDF document text
    • https://c2dbac7f-2075-4dc1-ad03-af0d0352bff2.filesusr.com/ugd/278743_e10f90d998fc4c358638bda44088b046.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/satofelimidoxetewune.pdfIn PDF document text
    • https://d8d691c7-cf48-432b-bece-a54604b57851.filesusr.com/ugd/1e3a4b_34978afd3d544b57884109a318e7896d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wumodukubaru/25824218760.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/luwugokodutalogo.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/where_can_i_buy_nordictrack_1750.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_off0005766f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5766F 5496 bytes
SHA-256: 835c90fc5bbca47dd880cd5845765c4c3004a36e12773da7d713e5d986f730be
font_01_sfnt_off0005890d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5890D 14364 bytes
SHA-256: c90c5bb3e628ed6ac8e61258108e2bf618c74ebe46cdfe16e2b3ccfa4b0a6bad