Malicious PDF — malware analysis report

Static analysis result for SHA-256 1550577567d37e64…

MALICIOUS

PDF

105.1 KB Created: 2021-04-09 18:58:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: bff1e8af21853178b808393741fcbd46 SHA-1: 12c9f1c99b910c789d51d74a4d30e8404b1133dc SHA-256: 1550577567d37e649dc5098cd6b99fa46ecf2cd6a6ae27b5e64684ec8e1d449d
96 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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://druttle.ru/strik?utm_term=integral+of+cos+x%255E3 PDF link annotation
    • http://siviveko.getenjoyment.net/molotov.pdfIn PDF document text
    • https://cdn.sqhk.co/zozevuxe/ggVhhih/vurekotavezivinexigun.pdfIn PDF document text
    • http://deutschebank-meine.com/how_to_use_schumacher_instant_power6zqnz.pdfIn PDF document text
    • http://cookwellbakewell.com/doctor_sleep_directors_cut_amazonxyafg.pdfIn PDF document text
    • https://cdn.sqhk.co/dixejetafap/icggnig/parallel_rlc_bandpass_filter_calculator.pdfIn PDF document text
    • https://cdn.sqhk.co/jovowosifo/OijnxLC/69499869451.pdfIn PDF document text
    • https://cdn.sqhk.co/belexewuwif/VljdheN/95050914717.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dolojivek.onlinewebshop.net/restaurant_business_plan_samples.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/90406599177.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad35b473-d59a-4f09-b288-8f4f49119a34/medical_medium_spanish_books.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cec55d0d-1072-4d41-a1c5-708784ab49d2/lafulomebowag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/caddde6b-2908-4bc1-bb8b-dcdf207b8aad/ansys_workbench_video_tutorial_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e48a1256-cf9c-4dbe-ba44-37a5e67c0368/sebopilo.pdfIn PDF document text
    • https://s3.amazonaws.com/bizamesuwepe/executor_guide_saskatchewan.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/56689387448.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/datoximixenefezi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b4eeff4-72cf-46bd-a786-631c971cfdfc/bodoxalivuvubexano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa9697e9-2fa4-4c61-af49-1ddb2e66a878/xusawokajikupixewixez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68ece33c-8acf-45f3-bfd9-3dc87bbb15b0/a_discovery_of_witches_book_1_audiobook.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/zakoza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73470ce9-751d-4d35-9350-65565f2003c8/newtons_laws_of_motion_test_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3ca36e1-dcd8-4585-83bb-b45e20d9678a/60106491748.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/257d964f-7d14-4fc4-b862-a02fcc5694d0/91492267795.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_off00011af4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AF4 21464 bytes
SHA-256: fc30f45a80d3d2770ef808c5f8c265881c9c63b127d8f714154f7e303785231c
font_01_sfnt_off00015ead.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15EAD 5268 bytes
SHA-256: 32ec5d2995f5b2eb2633c03498fc98a985431e8efd3d080639b8672f68d9aaaa
font_02_sfnt_off000170c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x170C4 11148 bytes
SHA-256: a064721e773d0ee760d521208e492394de90f9e7e5869cec808321ec009f6cfa

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