Malicious PDF — malware analysis report

Static analysis result for SHA-256 89aa9d58ec9a0638…

MALICIOUS

PDF

78.5 KB Created: 2021-02-17 00:10:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 827d15c127906b1ecfcfbd9b78349517 SHA-1: 152d5ed53feb68f82b55e14a56c7ff0e17378a12 SHA-256: 89aa9d58ec9a0638f7b48f70bd01a21b96760b68d995fbc7d77a33b8cc8d2a57
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 0.9996

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://maypoin.ru/strik?utm_term=marvel+comics+sword+emblem PDF link annotation
    • http://juzibekemuvur.iblogger.org/miller_xmt_304_cc_cv_specs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417525/normal_5fc86794c902e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466664/normal_6009f4f7c2983.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384039/normal_5ffcb7da5fdf9.pdfIn PDF document text
    • http://xitaboketeloba.iblogger.org/1686792244.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388063/normal_6018d06cc0219.pdfIn PDF document text
    • https://cdn.sqhk.co/bomoxale/jhjdb2e/free_mp3_music_download_sites_for_pc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464874/normal_601783631695e.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/zedudo/vebixuwusexunowetedekog.pdfIn PDF document text
    • http://pufaxutunipoja.epizy.com/22766096419.pdfIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/bitsat_syllabus_weightage.pdfIn PDF document text
    • http://kelujatideligo.epizy.com/workplace_health_and_safety_quiz.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/25990349809.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/bts_army_quiz_apk.pdfIn PDF document text
    • http://lubozogemodusa.epizy.com/seridagamikogovowe.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d624.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD624 6444 bytes
SHA-256: b2eb716f9f1f9b32722e1ea04f9b39d21e8999039eb4c7f2f5ede24790997a64
font_01_sfnt_off0000e614.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE614 5384 bytes
SHA-256: 084e99139b1e1dfe474ae7a87dd238d560476b47b2af7ca4823f72fc67e83b72
font_02_sfnt_off0000f868.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF868 10872 bytes
SHA-256: 91a8b066250ad44d5693df570ab2c20a54e8a5f1eb535901af4298cc72e937c4
font_03_sfnt_off00011d7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D7F 6124 bytes
SHA-256: d9eb55924640da5b156d72dbd8c415864ab1612bc76cfd7f0525d7b78e5db6d4

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