Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcee2636fbca2d2a…

MALICIOUS

PDF

79.2 KB Created: 2021-03-04 12:40:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 6266e2932a2abed10bccf025120d8f61 SHA-1: 4a13db449478c4106074c2f4ed0cc12a8e90ffeb SHA-256: fcee2636fbca2d2ac35f9b1a4f42178f484847805c60a2f79f9f22218d7b8e98
126 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one prominent URL pointing to a suspicious domain that is likely part of a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://zajinet.ru/wix?keyword=skyrim+halted+stream+camp+respawn PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383805/normal_5fd81465f023d.pdfIn PDF document text
    • http://community-day.ru/88509416189caxfb.pdfIn PDF document text
    • http://gnatural.space/the_engineering_design_process_worksheet_answersck6p8.pdfIn PDF document text
    • http://opensalle.xyz/arm_aion_rainmeterns345.pdfIn PDF document text
    • http://gejedesoni.getenjoyment.net/best_investment_trusts_for_income_2021.pdfIn PDF document text
    • http://bufizuz.22web.org/35586039510.pdfIn PDF document text
    • http://golden-bridge.pro/the_complete_book_of_hymnsl8wfq.pdfIn PDF document text
    • http://alexsaf.ru/android_simple_video_player_library70fab.pdfIn PDF document text
    • http://komarovskii.xyz/xibumepakenobowidilosudepouq3.pdfIn PDF document text
    • http://tibagisuminove.sportsontheweb.net/what_is_par_q_questionnaire.pdfIn PDF document text
    • http://jofifuneku.medianewsonline.com/where_to_buy_one_touch_verio_test_strips_philippines.pdfIn PDF document text
    • http://limecash.xyz/hallelujah_2_part_harmony_sheet_musice948d.pdfIn PDF document text
    • http://woxuruko.medianewsonline.com/is_fondant_dairy_free.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/poguvelefa/college_board_sat_practice_test_bubble_sheet.pdfIn PDF document text
    • http://deburukibovip.rf.gd/balloon_game_app.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/meters_to_feet_conversion_table.pdfIn PDF document text
    • http://kaseborodemo.rf.gd/kajezopedafaxogakiw.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/93378840560.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/cellist_at_royal_wedding_performance.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_off0000f9ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9EC 5676 bytes
SHA-256: 7d64d8143c727bf36d0068b5269b22d6f88cac871b032a8e5b419d974dfd1fe9
font_01_sfnt_off00010d2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D2A 10160 bytes
SHA-256: aa2d9981f8fe37f128c644c509321fce05c28d16bad305c822f7811adb6185da

Open this report in the interactive analyzer, or submit your own file for analysis.