Malicious PDF — malware analysis report

Static analysis result for SHA-256 766c422408ecd704…

MALICIOUS

PDF

79.1 KB Created: 2021-03-03 17:43:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 3a3782e347472a6c0978c3efbf6046db SHA-1: 56f88d9cb923d6fa0c8c7e043ee1367ab9dc1b37 SHA-256: 766c422408ecd7044989329635ed0a38559bccb5475adcc0ed9624452dc854fe
104 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an external URI pointing to 'https://zajinet.ru/strik?utm_term=dungeons+and+dragons+5e+monk+monastic+traditions', which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the presence of embedded URLs and the ML/ClamAV detections suggest it's designed to lead the user to a malicious site or download a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://zajinet.ru/strik?utm_term=dungeons+and+dragons+5e+monk+monastic+traditions PDF link annotation
    • http://rowowesofazov.medianewsonline.com/80130336396.pdfIn PDF document text
    • http://poxumanavofeboz.scienceontheweb.net/95740925738.pdfIn PDF document text
    • http://rexuwoxaga.sportsontheweb.net/how_to_become_height_without_exercise.pdfIn PDF document text
    • https://cdn.sqhk.co/fusozuwalas/PhiNsgi/fesijovovuliferev.pdfIn PDF document text
    • http://gosoxegekiri.mywebcommunity.org/25939922510.pdfIn PDF document text
    • https://cdn.sqhk.co/tutabalero/kQwjcji/rc_boat_simulator_mod.pdfIn PDF document text
    • http://bibivire.mygamesonline.org/is_the_10_day_green_smoothie_cleanse_healthy.pdfIn PDF document text
    • https://cdn.sqhk.co/rureroso/pjjgfIb/the_secret_order_2_masked_intent_walkthrough.pdfIn PDF document text
    • https://cdn.sqhk.co/noperizapewo/ijdhjIi/gitopilepawobotitupuliza.pdfIn PDF document text
    • https://cdn.sqhk.co/fovulifavu/ijihzjg/lujiporataju.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/forupokisip/trumpet_sheet_music_for_pop_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/3319164738.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/63892076904.pdfIn PDF document text
    • https://s3.amazonaws.com/wewiro/mezabobatofura.pdfIn PDF document text
    • https://s3.amazonaws.com/lupebesu/descargar_catan_classic_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/big_fish_games_free.pdfIn PDF document text
    • http://pizuzol.onlinewebshop.net/tuxadudemukajowogiburub.pdfIn PDF document text
    • https://s3.amazonaws.com/dewazewokib/20404162963.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7F5 5412 bytes
SHA-256: 935353c8cc9638b1dc635bfa2f49e11c4b2f33346ec5ab8d6b949caf4569222a
font_01_sfnt_off00010a59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A59 10732 bytes
SHA-256: 3b139b27ca8ba9b88b68137e53fbdee3ec81f35ad037e21171f312fae5ea7ffa

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