Malicious PDF — malware analysis report

Static analysis result for SHA-256 56984c85df5c4bd7…

MALICIOUS

PDF

77.4 KB Created: 2021-03-02 04:43:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 2a17c6ac68229ecba1e27f5fc0c75b14 SHA-1: 3b12b739da0b582333c66dc41e5c55c499d87e09 SHA-256: 56984c85df5c4bd7bb9543acd5430e808c476e80d0ed714fd3ed34fcb4ed74fa
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://soxebez.ru/strik?utm_term=is+neuropsych+testing+covered+by+medicare PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4426088/normal_5fe34c9bada2a.pdfIn PDF document text
    • https://zagemixawidi.weebly.com/uploads/1/3/1/3/131378918/3572321.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426280/normal_5ffd7f1041783.pdfIn PDF document text
    • https://bapefakujina.weebly.com/uploads/1/3/4/4/134483882/vadufi-zaron-fodewiju.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368474/normal_600043f5a1e22.pdfIn PDF document text
    • http://numulul.mygamesonline.org/wukakekemuxabomo.pdfIn PDF document text
    • https://danikobunib.weebly.com/uploads/1/3/4/7/134755608/2469505.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412161/normal_5fec57b2a719b.pdfIn PDF document text
    • https://julupoberoraw.weebly.com/uploads/1/3/4/3/134353221/wokav_jumujetam_zezuwoj.pdfIn PDF document text
    • http://dojemop.mywebcommunity.org/fidiz.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
    • http://zemoxatovasoga.rf.gd/zimisax.pdfIn PDF document text
    • http://zotubune.myartsonline.com/92847820173.pdfIn PDF document text
    • http://sonowodiguvab.epizy.com/16677130218.pdfIn PDF document text
    • http://bufirapopedodo.rf.gd/finding_distance_between_two_points_worksheet.pdfIn PDF document text
    • http://pemupenox.rf.gd/4522401548.pdfIn PDF document text
    • http://nunitew.rf.gd/bunujol.pdfIn PDF document text
    • http://dozuxix.myartsonline.com/washing_machine_door_lock_light_flashing.pdfIn PDF document text
    • http://ruzovufu.epizy.com/comprehension_passages_with_answers_for_grade_9.pdfIn PDF document text
    • http://sedejavuguz.rf.gd/car_games_racing.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_off0000e34d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE34D 5576 bytes
SHA-256: da82e96053420f4f29469e7542af863fd9381e92b919d5789b8e27ccb628bdd4
font_01_sfnt_off0000f615.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF615 10564 bytes
SHA-256: c4228f1d42c37b3cda5048f0095298e8f66804021ecd6b8257f9a4e5a770711d
font_02_sfnt_off00011a35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A35 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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