Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a0234314e21f8c1…

MALICIOUS

PDF

82.6 KB Created: 2021-05-02 09:50:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: ef346568a3f5aaa1a93fc7590e693df4 SHA-1: 28e7e2a42f25892bd65fb47b5accbfde537b20eb SHA-256: 8a0234314e21f8c195cf7d74c54a83eb774ae3bf1e59e4295f612edb327a24f8
136 Risk Score

Malware Insights

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

The PDF contains an embedded URL pointing to 'jottigo.ru', which is flagged as suspicious and associated with a phishing lure related to WordPress themes. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests the document may be part of a multi-stage attack, potentially involving a password-protected archive to bypass initial security checks. ClamAV also detected this file as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://jottigo.ru/strik?utm_term=download+wordpress+theme+from+wp-admin PDF link annotation
    • https://cdn.sqhk.co/duvapegoleva/hcuw8hc/6839607020.pdfIn PDF document text
    • https://cdn.sqhk.co/dojaxeje/4z3Gphh/ea_sports_ufc_mod_apk_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393345/normal_603951c194076.pdfIn PDF document text
    • https://cdn.sqhk.co/lazogapuvo/sqjjMQT/rajupifirevariru.pdfIn PDF document text
    • https://cdn.sqhk.co/fosulavale/ijjxijP/mejumilazukamupasepu.pdfIn PDF document text
    • https://cdn.sqhk.co/xonudutixova/iVnOiap/lagu_on_bended_knee_cover.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368242/normal_5fea3e2eb473d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379355/normal_5fe13453ebb1f.pdfIn PDF document text
    • https://cdn.sqhk.co/vutowogipu/ihignjd/space_heater_with_thermostat_and_remote.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485313/normal_602ae75a5b2fe.pdfIn PDF document text
    • https://cdn.sqhk.co/lewulula/wgifirD/81495648102.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/36a56262-0f90-43bd-8725-0d106376aed6/how_do_you_fix_a_tablet_that_wont_turn_on_or_charge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fa3cef0-4513-4ae4-9a14-4b7f1212845c/64233118734.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4c93d08-7641-408f-88ee-d15ff8da966e/calea_law_enforcement_standards_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b94c934f-cd8a-44a4-ab6d-13cf663ee1f0/web_typography_design_rules.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e835364-941f-4c33-ab9d-cdac5c1f0c92/interior_design_magazine_subscription_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a66d89ad-7eba-4596-9ce4-28948b413e0b/page_break_shortcut_google_docs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c807b22-08e7-4b20-a9cb-2f9ccccff153/gaussian_elimination_questions_and_answers.pdfIn PDF document text
    • http://zasewosena.rf.gd/call_app_for_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d52c44bc-4237-4e19-9db8-4817930a5e4c/15662157735.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bbe0c38-90b8-4ee7-b1ac-b745238bbd99/what_is_a_grand_magus_the_order.pdfIn PDF document text
    • http://befabeme.epizy.com/nuwobesolewurunodonute.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb998955-76b4-4826-8842-2980e0d56d26/brooklyn_colm_toibin_full_movie.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_off000106c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106C5 5404 bytes
SHA-256: b8d1970d3beea2c95b2d49bfd5e9e90a65c2eb44f19a71a3f8205cf9e2d9177c
font_01_sfnt_off0001191a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1191A 10384 bytes
SHA-256: afbdc89215e44e3314a5339f2adc9ce9063cb2fe6c7b74898731a0a8e5263014

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