Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7f7777f7fa6cc36…

MALICIOUS

PDF

68.1 KB Created: 2021-03-20 21:48:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: ecaf789d34735dc72f3da027ea73b11d SHA-1: 20368e2ab536091156d0920b8df6620acac9fac3 SHA-256: d7f7777f7fa6cc36999686ec0a0cda8cc07991923439bd75d5c471d33761f6ab
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 0.9997

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://botokaw.ru/award?keyword=biological+physics+nelson+solutions+manual+pdf PDF link annotation
    • http://maleev.online/komumogasenosezz2zb7.pdfIn PDF document text
    • https://cdn.sqhk.co/xubodijixali/hjjhdhj/juwunip.pdfIn PDF document text
    • http://devlp.design/vivamitisabavov4snhl.pdfIn PDF document text
    • https://cdn.sqhk.co/nebafori/cNQ6p9R/download_monkey_island_2_scummvm.pdfIn PDF document text
    • http://toxusuzom.mypressonline.com/81014048884.pdfIn PDF document text
    • http://lebedugipul.mywebcommunity.org/55609783234.pdfIn PDF document text
    • http://mizizufiku.mywebcommunity.org/lamebetavobasetozosatumo.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/fd9e4153-ca6c-4ae9-9c52-da6094ee2701/how_to_get_into_storyboarding.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/how_to_find_the_volume_of_cones_calculator.pdfIn PDF document text
    • https://s3.amazonaws.com/luropiw/ansys_apdl_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/avi_to_mp4_converter_online_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/fantastic_beasts_and_where_to_find_them_2_online_bg_subs.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/how_to_control_thermal_comfort_of_a_house.pdfIn PDF document text
    • http://bototiluwoge.atwebpages.com/number_plate_recognition_using_raspberry_pi.pdfIn PDF document text
    • http://zejibanunepi.myartsonline.com/91477983958.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromisixinolib/bbt_bank_locations_in_durham_north_carolina.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/334b6fe3-70b5-45ea-8eb0-b4d6a9015ace/97584545778.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d12a81f8-3a46-40c0-87eb-fccdf713ecdb/20504607803.pdfIn PDF document text
    • https://s3.amazonaws.com/farefasejikap/auto_format_python_code_sublime_text.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22a64890-2ac2-4322-901a-544a978e5b30/bumasazima.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/presidential_primaries_and_caucuses_worksheet_answers.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_off0000cc31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC31 5624 bytes
SHA-256: a1122276e407aed84ba7c12588d949b4fbf52e1d462abad6c49f57d76293e37a
font_01_sfnt_off0000df4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF4C 10500 bytes
SHA-256: d8f6730ff17d0949dc2230e0aec5992552988dc1f4e752b7ac5fdc470ae5c7fd

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