Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdba27d5cfcfcb03…

MALICIOUS

PDF

73.0 KB Created: 2021-06-05 16:01:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1e8322585f0290fc5f17366f54a98507 SHA-1: 513e7828c93c5da9a638b25c0cb1901cb9aef287 SHA-256: bdba27d5cfcfcb0304649541de9db8098082dfeafc665de83c8ade1efca5cdd1
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL that directs users to a page related to a "vitamix 3600 owners manual", suggesting a phishing lure. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs indicate a potential for malicious content execution, likely involving JavaScript for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://archism.ru/pbw?utm_term=vitamix+3600+owners+manual
    • https://cdn-cms.f-static.net/uploads/4480594/normal_605308c62cb09.pdf
    • https://cdn-cms.f-static.net/uploads/4372972/normal_604cdce3e6547.pdf
    • https://static.s123-cdn-static.com/uploads/4425211/normal_6006639dda391.pdf
    • https://cdn-cms.f-static.net/uploads/4379732/normal_5fd60d017456d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://ritijix.pbworks.com/w/file/fetch/144512100/does_my_keyboard_have_weighted_keys.pdf
    • http://gibuwodebu.pbworks.com/w/file/fetch/144489735/nice_guidelines_treatment_of_deep_venous_thrombosis.pdf
    • http://jufugoxula.pbworks.com/f/6349163606.pdf
    • https://uploads.strikinglycdn.com/files/49429fc3-66f4-4712-8b57-6ecf56391243/52507245638.pdf
    • https://uploads.strikinglycdn.com/files/35dbf289-b154-4a3d-800a-3168a150bc8a/kopemetinovewag.pdf
    • http://visetululiv.pbworks.com/w/file/fetch/144415209/nuvipiduvupavejenapabuz.pdf
    • https://uploads.strikinglycdn.com/files/07f1822f-4527-4b30-b882-94fa8b4b4304/dujotunedama.pdf
    • http://joxupakager.pbworks.com/f/52061000400.pdf
    • http://ruxafonan.pbworks.com/f/how_to_set_gardena_water_timer.pdf
    • http://gitefov.pbworks.com/f/free_download_driver_printer_canon_lbp_6000_for_windows_7_32_bit.pdf
    • http://wozixokumo.pbworks.com/f/aaa_battery_dimensions.pdf
    • http://fatakalewene.pbworks.com/f/39771472933.pdf
    • http://jitilabajeko.pbworks.com/f/how_to_get_verizon_fios_bill_lowered.pdf
    • https://uploads.strikinglycdn.com/files/3ae26f53-e77d-4b2b-91ec-cb42b8588746/how_to_weld_with_lincoln_180.pdf
    • https://uploads.strikinglycdn.com/files/cb348f52-20f1-4e75-80ba-95309e98c67a/digitech_sdrum_reviews.pdf
    • https://uploads.strikinglycdn.com/files/972cad39-2dd3-42bd-8208-c14404554d91/ketezorimisunekapodopit.pdf
    • https://uploads.strikinglycdn.com/files/5d9a50fb-1013-4e68-af2d-a371e9b8f01e/mabuxomosusejurexitaxu.pdf
    • http://xojifot.pbworks.com/f/taylor_fundamentals_of_nursing_9th_edition_ebook.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de3e.bin
a609b8d685720d25beb3524c8d665eb977f2f6432dd0229543eb1c14847034bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE3E 5416 bytes
font_01_sfnt_off0000f0a3.bin
1a9e3e2d81053a42775ee7e5fcecb0bea69a81e1d46931c93cdf87ef5e949341		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A3 11404 bytes

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