Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab055fb769c65a6f…

MALICIOUS

PDF

74.5 KB Created: 2021-03-03 13:44:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 606154d7241a4db90dfe3e351de3ab0d SHA-1: 57eacdc0d231e84a8f199f3f4608cb24a32aad6e SHA-256: ab055fb769c65a6fb61080cd5dc5f30efccb13e0c435f1b45b24a9b7666e6de9
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 0.9998

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://golowaki.ru/123?utm_term=how+big+are+boston+market+sides PDF link annotation
    • https://cdn.sqhk.co/pidagasew/kihgh3Z/7265219937.pdfIn PDF document text
    • https://cdn.sqhk.co/nexasolonit/ihjijyr/pofajejumibo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379387/normal_5fd82496d547e.pdfIn PDF document text
    • https://cdn.sqhk.co/sigidezok/Dhf6icU/world_war_z_game_ps4_controls.pdfIn PDF document text
    • https://cdn.sqhk.co/paparidew/X6heiiY/vojidadova.pdfIn PDF document text
    • https://cdn.sqhk.co/gosukutusu/0ojeHYV/disney_movies_newer.pdfIn PDF document text
    • https://cdn.sqhk.co/posojuvapono/jggejdj/run_race_3d_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/falupuvevore/iDzEhjQ/best_swiss_ice_hockey_player.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476416/normal_602ce7cb5efb5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451363/normal_60198f5b2d44e.pdfIn PDF document text
    • https://cdn.sqhk.co/kawinojos/heFjeje/gold_balls_ball_game.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/70388163733.pdfIn PDF document text
    • https://s3.amazonaws.com/tomaxade/university_transcript_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/vupepaxidixa.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/4th_grade_division_problems_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/lonirolepirunovapekero.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/asus_zenfone_3_laser_firmware.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/animated_instagram_story_templates_free.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_off0000e633.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE633 5368 bytes
SHA-256: 92290a82d982169a02e91dda9aa61403e242f622eaa5286ae401f32fb741f69b
font_01_sfnt_off0000f872.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF872 10828 bytes
SHA-256: 8568d043f31687d5c64c7e2d382cb82efb4bc157a0fb11cc3e82322824478cb6

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