Malicious PDF — malware analysis report

Static analysis result for SHA-256 02202dccf8caf1c3…

MALICIOUS

PDF

78.4 KB Created: 2021-06-08 00:37:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3bdd614109160e3048bd4b0900977400 SHA-1: 0ff5d8d9efb73da9e9c19127d5d5a690fa3f7344 SHA-256: 02202dccf8caf1c334a0cb2b49d59ce4f33a66e84cceccb3f64cb44c853656f0
104 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://nomylo.ru/pbw?utm_term=canon+pixma+mg2522+manual+espa%25C3%25B1ol PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4474206/normal_6030a50d58d84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402938/normal_603bcc1f4c464.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489853/normal_5fe73e0ae8022.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446651/normal_603251a4b021a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f20b0e5-3a18-474f-9f89-515eea8f2b2c/lactose_and_egg_free_pancakes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a7967ed-aaf7-4688-b5de-4b6ba1afdd0b/sowelugarake.pdfIn PDF document text
    • http://nebapelamive.pbworks.com/w/file/fetch/144538119/diles_que_no_me_maten_juan_rulfo_completo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4e17d8d-9ee9-4ad7-86d8-6c08bcd5701d/jabra_step_wireless_headphones_manual.pdfIn PDF document text
    • http://lomubel.pbworks.com/f/walking_in_a_winter_wonderland_piano_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c198c528-9946-4032-bd73-db7dbb914b9d/fomosupulopikakixire.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e37fe06-22dd-437b-8d20-8f30da045cab/gas_turbine_power_plant_working_principle.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ede9350b-9abf-4d72-929a-f975f77d36ff/87379004481.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7aac178-5cd1-4b9d-93fc-673f14360f3f/do_androids_dream_of_electric_sheep_summary_chapter_17.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1acf403-0bb4-4ddc-9f54-291b26fb27f7/67622486034.pdfIn PDF document text
    • http://mapaduzipi.pbworks.com/f/telugu_melody_music_ringtones_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f888cb9-8b60-4430-b93d-0852fb7869ba/81888191258.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e25d0f4-cc1e-4732-a36d-e8485df8629e/volume_of_prisms_and_pyramids_worksheet_answer_key.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_off0000ef00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF00 5484 bytes
SHA-256: 891330fefd962d8953abb93c6fc71d3a21bf90af315aeb5ed24706b0d8bbb4a2
font_01_sfnt_off00010169.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10169 12752 bytes
SHA-256: 458fbb12e28a54a02afb5abad07c9ba8b1c3d4a31268b3c0fdbf4bc60bac6290

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