Malicious PDF — malware analysis report

Static analysis result for SHA-256 698c32e15f8f6d83…

MALICIOUS

PDF

76.9 KB Created: 2021-02-15 13:15:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 2cf0aaa882ac1587ae639896e0c4da9a SHA-1: 23641f033580e7e21507c676fa6b10ea62aefff7 SHA-256: 698c32e15f8f6d83473fcd34b419f5e5cafe157557aa1b9b17a51e6530280364
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to business analytics courses.

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://maypoin.ru/strik?utm_term=business+analytics+courses+coursera PDF link annotation
    • https://cdn.sqhk.co/lexijunibul/jinhj7l/monsters_inc_toys_for_toddlers.pdfIn PDF document text
    • https://cdn.sqhk.co/xaranoraf/CTvMjj0/nolan_arenado_injury.pdfIn PDF document text
    • http://tedalaz.66ghz.com/doterafodevor.pdfIn PDF document text
    • http://lesanuzununefa.22web.org/college_mate_song_ringtone.pdfIn PDF document text
    • http://sewaseg.22web.org/78500453955.pdfIn PDF document text
    • http://detobusukited.iblogger.org/guidelines_for_drinking-_water_quality_2nd_ed.pdfIn PDF document text
    • http://fufirajonitav.22web.org/21114949315.pdfIn PDF document text
    • http://pupofikavize.iblogger.org/business_quote_templates_free.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/vovopafubipu/baldi_s_basics_free_online_game_no.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/crock_pot_multi_cooker_instruction_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/zobifexapurifawezukuzo.pdfIn PDF document text
    • http://gumofiwulova.epizy.com/traceroute_reports_destination_host_unreachable.pdfIn PDF document text
    • http://zozezad.epizy.com/muxanitusezexok.pdfIn PDF document text
    • http://budunasetixap.epizy.com/xadoliveteweti.pdfIn PDF document text
    • http://rokipegokibaf.rf.gd/734292766.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/ronorameme.pdfIn PDF document text
    • http://kitojob.epizy.com/32094765072.pdfIn PDF document text
    • http://luloxefisamo.rf.gd/43353779921.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_off0000f165.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF165 4944 bytes
SHA-256: e927780a0fecaa7cb9e8a2a821484450b48983ad6dbadefa84f1093a62e46d60
font_01_sfnt_off0001024f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1024F 10580 bytes
SHA-256: 998c09111f8454955042bbe1895a2422c081899e67fda930cae2ec84d9ebb045

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