Malicious PDF — malware analysis report

Static analysis result for SHA-256 f93ebc0fab2da5b6…

MALICIOUS

PDF

205.3 KB Created: 2021-05-17 20:06:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dfab9c4c5b4b714de7d82e55f04554d8 SHA-1: 32d8a6d37064218741e9a7b8723916d58ea80098 SHA-256: f93ebc0fab2da5b6133bea2e0aad3cfcd60d8923c679ba35451e4a10c1d0166c
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing attempt. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, appears to reference a service manual, a common lure for phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9843

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/strik?utm_term=2007+kawasaki+vulcan+1500+classic+service+manual
    • http://trynutra.shop/pigojuxusudilivanikd0qix.pdf
    • https://cdn-cms.f-static.net/uploads/4407777/normal_6034d1f5b6d67.pdf
    • http://biweekamnf.com/ue_megaboom_2_speakerphonebd3pu.pdf
    • http://startbastar.online/adding_and_subtracting_mixed_numbers_worksheets7ajky.pdf
    • http://tifoxikutawe.sportsontheweb.net/ragululi.pdf
    • http://wajazenizur.mywebcommunity.org/59831168099.pdf
    • http://moxawunanenubop.sportsontheweb.net/weber_grill_charcoal_holder.pdf
    • http://smallita.space/billetes_y_monedas_de_hondurassxc2q.pdf
    • https://cdn-cms.f-static.net/uploads/4391302/normal_6056f9bfeacea.pdf
    • http://nexofozupugasi.mywebcommunity.org/how_to_start_a_bakery_business_in_nigeria.pdf
    • http://blockingscenery.com/love_island_game_tweet_challenge_answers6wk5m.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/6528d432-7ff3-42e8-9259-6152823cf45e/7610562155.pdf
    • https://s3.amazonaws.com/sabobenuwe/mixujanezomuzabuzolutota.pdf
    • https://uploads.strikinglycdn.com/files/ab099949-d5c7-4e10-bae5-4a8684ecaa70/owen_meany_quotes_with_page_numbers.pdf
    • https://uploads.strikinglycdn.com/files/8fcc283f-8b34-44d1-9b0b-0df79beb9241/33300041849.pdf
    • https://uploads.strikinglycdn.com/files/c7b25d9f-dc06-4176-8ac6-88c2f6ac5bc4/batagizobazumamoxores.pdf
    • https://uploads.strikinglycdn.com/files/250ca39d-37f2-49fd-b897-a36bea15dea5/how_to_prepare_for_usmle_during_mbbs.pdf
    • https://s3.amazonaws.com/votuweroxigezog/how_to_repair_jbl_flip_3.pdf
    • https://uploads.strikinglycdn.com/files/4329d3da-43cd-4a62-8a43-7004bae2b9e1/lowumakenotigexavuram.pdf
    • https://uploads.strikinglycdn.com/files/954f04ef-b017-4666-b95c-cdbb04af9227/38066263579.pdf
    • https://uploads.strikinglycdn.com/files/840f4485-0462-4404-b2e0-4b2d89dd8311/samuel_beckett_most_famous_plays.pdf
    • http://sefokirof.onlinewebshop.net/2206988323.pdf
    • https://s3.amazonaws.com/nakevoja/omron_pedometer_manual_hj-325.pdf
    • https://uploads.strikinglycdn.com/files/3be6d726-8cb4-47d3-91b6-027b93d2e568/how_to_upgrade_autocad_2019_to_2020.pdf
    • https://uploads.strikinglycdn.com/files/c4758507-3a17-4388-aeb3-bd0d4ef02e2d/pibimezesew.pdf
    • https://s3.amazonaws.com/nemafu/spotify_premium_mod_apk_android.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002d258.bin
cf5473d41b6ad3592448909c1f457fd676a6e3b1b735a9622690f3188b40556a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D258 5596 bytes
font_01_sfnt_off0002e57b.bin
ea1cbac49c06e198cad15eaf9515babd7d264c5937534d0bde1b1699d2638f0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E57B 12668 bytes
font_02_sfnt_off000310f9.bin
49436f94d5abf10ca6af8af9848174aab82dfe7bc58a5146411d238fd5c76648		 pdf-font-stream PDF embedded font (sfnt) at offset 0x310F9 16148 bytes

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