Malicious PDF — malware analysis report

Static analysis result for SHA-256 beeb243a6d004bc7…

MALICIOUS

PDF

85.0 KB Created: 2021-05-01 23:22:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: fed1aa7042ba4404fd5d9fa05bffe84b SHA-1: 59272eba09186cf035183c676ddfc93c65f611ec SHA-256: beeb243a6d004bc71f2148ca2b679249446e9534c1a88577232d1c36b47fc27f
206 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains heuristics indicating it is a phishing lure impersonating Microsoft, directing users to a suspicious URL for 'Oracle 11g sql commands'. The presence of numerous embedded URLs and the ML classifier's high confidence score suggest malicious intent, likely for credential harvesting or malware delivery. The ClamAV detection further confirms its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://soxebez.ru/strik?utm_term=oracle+11g+sql+commands.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://soxebez.ru/strik?utm_term=oracle+11g+sql+commands PDF link annotation
    • http://manybigs.space/rizupppvqs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445558/normal_600eb27de9337.pdfIn PDF document text
    • http://podarokinsta.online/a._r._m._y_bts_full_form9fznj.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzaxepigi/elvbwib/bingo_friends_play_free_bingo_games_online.pdfIn PDF document text
    • http://d-youtube.com/kowajemajupupuytfbg.pdfIn PDF document text
    • https://cdn.sqhk.co/wogirujut/jhWhbgM/vonipumebozigiwun.pdfIn PDF document text
    • http://bionatur.space/rasowuf7ezaz.pdfIn PDF document text
    • https://cdn.sqhk.co/kekelivig/f8KNR77/taxi_driver_sim_2020.pdfIn PDF document text
    • http://reduslimitaly-ufficiale.website/xetegifojj8b4p.pdfIn PDF document text
    • https://cdn.sqhk.co/pulazapusaw/vGPhjyv/liriwidivavogokavo.pdfIn PDF document text
    • http://metryck.info/prentice_hall_foundations_algebra_1_form_g_answersnmvpj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480582/normal_603c7b7fa1150.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489993/normal_605ab54c20d20.pdfIn PDF document text
    • http://salonapp.xyz/76540016893xp6wo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473415/normal_602461211bc6a.pdfIn PDF document text
    • http://naguvogegexaze.22web.org/how_much_does_it_cost_to_send_package_internationally.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417423/normal_601fbf601d964.pdfIn PDF document text
    • http://tronreserve.online/92461937476x9rbq.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://venekeludoruxa.epizy.com/alcatel_3025_user_manual.pdfIn PDF document text
    • http://gagarereforer.epizy.com/7669910751.pdfIn PDF document text
    • http://litemulum.rf.gd/54415243675.pdfIn PDF document text
    • http://sumojoripira.rf.gd/sat_practice_test_with_answers_and_explanations.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_off00010e0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E0F 5464 bytes
SHA-256: fd88bd98345cd3db1734dd1987da3fb0726675c85e3e4f1459119506c98522db
font_01_sfnt_off00012082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12082 11140 bytes
SHA-256: e06f444e87dbc4fe922bd34373329956e3ef8a606a2d273b3e7e38a508496bda

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