Malicious PDF — malware analysis report

Static analysis result for SHA-256 57619a9d3d910ca8…

MALICIOUS

PDF

69.4 KB Created: 2021-03-27 21:06:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e06dbffe21092e7485238f49a821a289 SHA-1: 47df55c93e9fbeb9fc8360025c1ced6ba9775147 SHA-256: 57619a9d3d910ca8164c3e23ae4db8b31d2c3062aa9564d4d2057fb099ae4b61
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://ponafet.ru/123?utm_term=states+of+matter+worksheet+pdf+grade+3 PDF link annotation
    • http://lizubujakus.22web.org/29088710841.pdfIn PDF document text
    • https://cdn.sqhk.co/jutigurotow/crjbohg/ninja_vegetable_slicer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382638/normal_60197bdbbd056.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/phihic9/king_saver_branson_west.pdfIn PDF document text
    • http://hookup154.fun/siriruge9ad1i.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465018/normal_602e80a70b532.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381534/normal_5ffacdb3aecea.pdfIn PDF document text
    • http://bezprovodov.guru/43853260121pjz8r.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/pozokimepe/same_name_affidavit_format_india.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b322c5b4-ec4d-4eeb-9be3-c5b482d9c728/gandhi_jayanti_best_images.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/kivaji.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/android_callback_interface_example.pdfIn PDF document text
    • http://wiwafejopof.epizy.com/bleak_falls_barrow_puzzle_answers.pdfIn PDF document text
    • http://wijevisufa.rf.gd/tencent_emulator_for_mac_os.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29645c71-8465-4954-8cb0-e30003e111a5/craftsman_jointer_planer_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f342cda5-3d38-4129-82f6-cc4d3bfab598/duraflame_fan_heater_stopped_working.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/javascript_mailto_html_format.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_off0000cfde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFDE 5848 bytes
SHA-256: 70a692474277180ed681cb908fd5919e0aa4423969a19c6cb7489e62148be38e
font_01_sfnt_off0000e3b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3B5 10724 bytes
SHA-256: b819c033d1c4e7505534984db8d82af5774cd05faeb3a75662ed9a85d8bc502c

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