Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d6da3b5ea0e275b…

MALICIOUS

PDF

55.7 KB Created: 2021-03-10 15:24:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: abe020f8f1d476ce6537985bbda25fc5 SHA-1: 4780dddfeda5d702824180bd310f81a7823218a3 SHA-256: 4d6da3b5ea0e275b238642ecb7dee69348a865a43c2508848fae8d25694ae6ac
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing lure. The document body, though heavily obfuscated, appears to be a worksheet, which is a common lure for malicious documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6222

Heuristics 4

  • 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
  • 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://dugedepap.ru/award?keyword=subject+verb+agreement+with+collective+nouns+worksheet+pdf PDF link annotation
    • http://xulazawelinuze.scienceontheweb.net/2013_jeep_grand_cherokee_transmission_oil_change.pdfIn PDF document text
    • https://vogifidawavuda.weebly.com/uploads/1/3/1/6/131636702/nixigapedifige-sunabomeram.pdfIn PDF document text
    • https://cdn.sqhk.co/wixedineve/aIdSnhd/molecules_of_life_explore_1_worksheet_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/guwuweri/Vvvejad/74269870512.pdfIn PDF document text
    • https://xujesosa.weebly.com/uploads/1/3/6/0/136090165/vujajeruxejek.pdfIn PDF document text
    • http://mitatizizuje.mypressonline.com/pathfinder_kingmaker_portraits_nsfw.pdfIn PDF document text
    • http://mamefumiwuto.mywebcommunity.org/how_to_use_slow_cooker.pdfIn PDF document text
    • http://gejudoxe.mypressonline.com/xbox_live_fehler_8015d002.pdfIn PDF document text
    • https://vadutebo.weebly.com/uploads/1/3/4/8/134889136/7912163.pdfIn PDF document text
    • https://cdn.sqhk.co/vozevadijut/ggciaib/unicorn_skins_for_roblox_app.pdfIn PDF document text
    • https://lemidedimiba.weebly.com/uploads/1/3/0/8/130874299/7728762.pdfIn PDF document text
    • http://bajifepeselok.sportsontheweb.net/how_to_fix_a_bad_fan_clutch.pdfIn PDF document text
    • https://cdn.sqhk.co/tovipovo/hfhjzhe/maharshi_movie_ringtones_free_download_telugu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47b5eaba-ce71-4c69-8d97-b07a70c7418e/why_was_reconstruction_a_failure_yahoo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e2d60fd-d581-496f-8839-08fb5f729eae/nursing_diagnosis_handbook_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f85b65f4-c7d0-4145-9af0-b8b910d4d5b2/xovajawin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d5e35b5-a6ad-4420-88f5-259e82cb9b95/what_is_gram_positive_cocci_mean.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bbf1ce9-90f5-47f7-bfed-f97ec10826a9/platos_dialogues_in_chronological_order.pdfIn PDF document text
    • http://vegubom.atwebpages.com/tascam_dr-05x_portable_digital_recorder_reviews.pdfIn PDF document text
    • http://tuwutexo.onlinewebshop.net/92654246288.pdfIn PDF document text
    • http://weparaxopulo.atwebpages.com/simple_past_present_and_future_tense.pdfIn PDF document text
    • http://sipanokule.onlinewebshop.net/18153675380.pdfIn PDF document text

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