Malicious PDF — malware analysis report

Static analysis result for SHA-256 99ac4589f00e543d…

MALICIOUS

PDF

73.7 KB Created: 2021-03-20 05:25:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d1a63af158200a1ad8da97faca7e1b9a SHA-1: 82e9509c91902ab797eaac62a3fea8d7ac840726 SHA-256: 99ac4589f00e543dc473c4c2f9132e0fa1d058914ac73e33d49f7cdddbb4220b
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://kuzutuzo.ru/wix?keyword=moviehdmax.com+inside+out PDF link annotation
    • http://regse.website/923004231221g57v.pdfIn PDF document text
    • https://cdn.sqhk.co/lebapivi/1FjcycP/78323694245.pdfIn PDF document text
    • https://cdn.sqhk.co/reriwoduriju/jicifWd/kelley_blue_book_free_carfax_report.pdfIn PDF document text
    • https://cdn.sqhk.co/romemanir/iajggfT/realmcraft_update_2020.pdfIn PDF document text
    • http://cosmostil.top/84428224127wbybz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421051/normal_5fd7c4362ac13.pdfIn PDF document text
    • https://cdn.sqhk.co/gutifusuf/WqfBQif/44438309254.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502906/normal_60518b5f9020c.pdfIn PDF document text
    • https://cdn.sqhk.co/lididiregi/cjgc1jd/age_of_empires_2_taunts_soundboard.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393036/normal_60129263cac3f.pdfIn PDF document text
    • https://cdn.sqhk.co/guvevifowo/Hhjyggr/cyberbully_zombie_attack_level_codes.pdfIn PDF document text
    • https://cdn.sqhk.co/dibitarebizu/wgf2Jcs/9680009583.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/telasebisu/minecraft_butcher_mod_1._7._10.pdfIn PDF document text
    • https://16fd3b15-5541-4454-9538-28daacbf497e.filesusr.com/ugd/e32576_40507ca8a0de4e0a8dbee772b5b38f39.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/nice_guidelines_amyloidosis.pdfIn PDF document text
    • https://0f285ee0-1b14-49a2-8a3e-060a2db94812.filesusr.com/ugd/4bf67f_7a893b3e8e0f4236bca7b8deb214dd47.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/how_gravity_influence_time.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/examen_toefl_gratuit.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_off0000d129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD129 5100 bytes
SHA-256: 41aa6111684b0c97c0cfde1c0732b7b53256e2eccb655f6a5ba487df74b10305
font_01_sfnt_off0000e26c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE26C 11792 bytes
SHA-256: 52ffc23afa717b7c9a52be74f7ac06e557e27cc6eff4bdcfebbff3aef4d0df63
font_02_sfnt_off000109bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109BD 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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