Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a2fe3c43ee13efc…

MALICIOUS

PDF

71.3 KB Created: 2021-03-15 19:31:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b15b9bb780a404299d27d81e8471b0c4 SHA-1: cf95d3be74469638577725f9f6cd97b02f14b5ef SHA-256: 8a2fe3c43ee13efcdd2e053bdf40493f6d7c636308a4ea8ddd1b1c7371bf6ffa
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified by heuristics as a potential phishing or malware distribution lure. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://lozipotod.ru/123?utm_term=5+column+chart+template
    • https://vujugorakiti.weebly.com/uploads/1/3/4/7/134719441/a53bdd68d5d.pdf
    • http://lishop.site/kefunilobatuzabetasusiee2h0.pdf
    • http://pafowitowa.medianewsonline.com/biostatistics_in_public_health.pdf
    • http://im-marceting.site/52425057378u7u96.pdf
    • http://oblakova.ru/nordictrack_a2105_treadmill_reviewzuz23.pdf
    • https://gumakini.weebly.com/uploads/1/3/1/4/131414358/vovosabodobo-rebut.pdf
    • http://meetchambre.xyz/handbook_of_cognition_and_emotion_1999ogm6a.pdf
    • https://jadomuvifaxa.weebly.com/uploads/1/3/5/9/135960305/b9edee9cd9ef851.pdf
    • http://dompodklyuch.com/neon_lights_wallpaper_for_phonest80dj.pdf
    • http://piwofoterif.sportsontheweb.net/cursive_capital_letters_a_to_z.pdf
    • https://ruvawuwejijexut.weebly.com/uploads/1/3/0/8/130814193/1401993a5911faf.pdf
    • http://jenirafona.22web.org/fun_multiplication_printable_worksheets_grade_3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dofumuligo.rf.gd/ielts_reading_passage_1_caves_answers.pdf
    • https://s3.amazonaws.com/wivunonovef/24781857862.pdf
    • http://dozuxix.myartsonline.com/sedufowoliwazidopejon.pdf
    • https://s3.amazonaws.com/winumigutam/belly_fat_reduce_exercise_video.pdf
    • https://s3.amazonaws.com/viwoxuz/xunekesizuwizatonobejaf.pdf
    • http://kozusabupo.epizy.com/girl_scout_yell_and_song_lyrics.pdf
    • http://gavisijimaraw.rf.gd/chinese_aid_and_african_development.pdf
    • http://zesafemumibow.myartsonline.com/rupaxabugegapaferatuze.pdf
    • https://s3.amazonaws.com/xotomisen/44105677694.pdf
    • https://s3.amazonaws.com/rivazixexuguri/43339924179.pdf
    • http://lifotag.rf.gd/darejatufefipomuzibi.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd6f.bin
fb28bf3f0ce2793661023016d657803803c439d19eb53f69f2e0bd30719a9378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD6F 5024 bytes
font_01_sfnt_off0000ee57.bin
4c551c85f20209e0430c3c02afe4b7669dbb042aefe1bc03056c335722e9bba7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE57 9804 bytes

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