Malicious PDF — malware analysis report

Static analysis result for SHA-256 6977b3f0091b43ba…

MALICIOUS

PDF

76.1 KB Created: 2021-03-10 15:33:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 447241933c625b59812c8e0defa41ee3 SHA-1: aabe00c0af4d1022d6adf1109c7bc348df2f02cd SHA-256: 6977b3f0091b43baf608ddd69dec5abe8cff664bd70bc6e8edb97074ec99e8ef
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with one specifically pointing to 'kuzutuzo.ru' and framed as a search result for 'how to edit pdf file in adobe reader free download'. This suggests a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://kuzutuzo.ru/award?keyword=how+to+edit+pdf+file+in+adobe+reader+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4475016/normal_6035c29c876df.pdfIn PDF document text
    • https://cdn.sqhk.co/jaziwuke/IHonjiO/washington_capitals_hockey_apparel.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/jaFghgl/rezenodijudodaw.pdfIn PDF document text
    • https://cdn.sqhk.co/degawatoze/8tSYHjg/air_cooled_911_buyers_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418370/normal_5fda5d74e6485.pdfIn PDF document text
    • https://cdn.sqhk.co/nisugavu/nVygjha/kiki_s_delivery_service_not_on_netflix.pdfIn PDF document text
    • https://xudemogarutigi.weebly.com/uploads/1/3/4/7/134733212/texigodojutos_teluziliv_divebufasisunug_vojebavamut.pdfIn PDF document text
    • https://jukamonasob.weebly.com/uploads/1/3/0/7/130740128/9c7bb1eb71.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383804/normal_5fca3db3e7ecb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413455/normal_602468d0874a2.pdfIn PDF document text
    • http://nufefabipiketod.22web.org/autocad_2000_mac_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://magonusu.epizy.com/32006639499.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/kjv_rainbow_study_bible_leather.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/game_dragon_ball_mod_apk_offline.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbf927e9-e323-4538-b440-0bd7589c6529/65806867962.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88db29cc-f0c6-4d93-9291-95f2cd7f8161/sat_practice_test_3_answers_khan_academy.pdfIn PDF document text
    • http://lixazavifamu.rf.gd/light_novel_reader_software.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6829fbe8-c2b4-4ebe-b957-46569dc62a1c/why_is_colour_important_in_graphic_design.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63516e87-d6ea-49fa-8631-6dd9b899be9f/zabikamesuwotumituv.pdfIn PDF document text
    • http://mukagodikuve.rf.gd/an_inspector_calls_bbc_watch_online_free.pdfIn PDF document text
    • http://xorosobodudirug.rf.gd/88574688780.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/silk_browser_app_for_android.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_off0000eec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC2 5052 bytes
SHA-256: cb6eebd56f65fd45523908e11a854d40e0f04434d2d3b715a077324ee2e817d7
font_01_sfnt_off00010009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10009 10096 bytes
SHA-256: 67e7cc8ff11aa6f4e9de70ca72401d54ff334b91f4dc88d5a983796085f6c9ad

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