Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e33ea701c3c5ae3…

MALICIOUS

PDF

112.4 KB Created: 2021-04-02 19:57:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: d0f6ad247bfd71ca15ace3e95a0ab58d SHA-1: 9717d70b5442b03b96c825f1c95e4b04d61aa001 SHA-256: 1e33ea701c3c5ae3089045e4ddd1de3ed27f8b09a6d4bdd75a814e1bdd398e29
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or social engineering attempt. The document body, though heavily obfuscated, contains keywords related to a game, suggesting a lure to attract victims. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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
  • 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://nipisod.ru/wix?keyword=dead+by+daylight+doctor+guide PDF link annotation
    • http://torixobo.mypressonline.com/rexar.pdfIn PDF document text
    • https://retenosarubus.weebly.com/uploads/1/3/2/6/132695405/lupeliwizurawis.pdfIn PDF document text
    • http://wapajojakazewi.iblogger.org/tekken_game_for_android_apk.pdfIn PDF document text
    • http://fizarumokugafu.mywebcommunity.org/numerical_methods_to_solve_partial_differential_equations.pdfIn PDF document text
    • https://nijubalalo.weebly.com/uploads/1/3/1/4/131453980/pigim_kubelajezod_mutepa_pabadibisexe.pdfIn PDF document text
    • http://favodokoleti.mypressonline.com/bukojimaxuvumumelezu.pdfIn PDF document text
    • http://gakukuketisalum.scienceontheweb.net/guidelines_for_auditing_process_safety_management_systems_2nd_edition.pdfIn PDF document text
    • https://lakerevuko.weebly.com/uploads/1/3/4/6/134654656/dawoditufavono_zexeduvogova.pdfIn PDF document text
    • https://firupewuvub.weebly.com/uploads/1/3/4/3/134330425/85ff1b331f.pdfIn PDF document text
    • http://tevutubiwij.getenjoyment.net/mouse_guard_roleplaying_game_box_set.pdfIn PDF document text
    • http://worabipupe.mypressonline.com/esl_interview_questions_and_answers.pdfIn PDF document text
    • http://ritefajitexu.scienceontheweb.net/home_buying_for_dummies_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nisinukodepafix.rf.gd/2481601860.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/inception_piano_sheet_music_time.pdfIn PDF document text
    • http://widusop.atwebpages.com/xajotag.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/38154371411.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/kamuporisuloxazasabakovux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26efa792-6a11-40a7-9ff0-7e156efcd2b0/xujuvedajufakimodo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6d4d64c-3c0e-458e-80fe-4c77affd451c/aircare_humidifier_reset_clean_filter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c27bc8a4-c30a-46ec-a4d1-8f9c6f82a99e/59755176524.pdfIn PDF document text
    • http://rolugume.rf.gd/stihl_fs_56_rc-e_trimmer_review.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/libovebozok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef079d06-ed02-4f63-b256-4dc6b2263065/planeacion_estrategica_de_marketing_conclusion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d59ce56b-66fb-4426-a82c-c313beb0eb77/bibonuzaniloponeguvodir.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016d56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16D56 3932 bytes
SHA-256: 6635eb9db22a0d4d8d3199de00c5680c570f503fe28e6406287b9dc4466e8239
font_01_sfnt_off00017b4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17B4D 5264 bytes
SHA-256: 0eca7adca67bc5c1ce3943106c8365c868f44aa6967101072752bb9472980429
font_02_sfnt_off00018d35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18D35 11428 bytes
SHA-256: b713d07df90bc4b17db1921000d36337a52f87ca23940b73fc48963680a6fa8a

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