Malicious PDF — malware analysis report

Static analysis result for SHA-256 938c384f407389f9…

MALICIOUS

PDF

73.9 KB Created: 2021-02-24 15:27:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 2f8bbc9a9fc1bbd43f4407e6f8922e43 SHA-1: 7cb0ce00e818154323b7d9e478c95db529e10314 SHA-256: 938c384f407389f9807cd81338a3a9448cef3245d861d76c28973794fab25ee9
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ML classification and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a deceptive lure related to a chapter summary, which is a common tactic for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://baarspo.ru/strik?utm_term=joey+pigza+swallowed+the+key+chapter+summary PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4384296/normal_5ff8c34f24f73.pdfIn PDF document text
    • http://giwapozolaleg.mypressonline.com/36717262765.pdfIn PDF document text
    • http://kino-vezde.ru/nanalisiberobokemorewa2fjdi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455406/normal_6026d319b7d25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374859/normal_60250e575ddea.pdfIn PDF document text
    • http://xulubapatoso.scienceontheweb.net/70337378178.pdfIn PDF document text
    • https://cdn.sqhk.co/jirudumom/iejhhjY/25094828173.pdfIn PDF document text
    • http://natbeach.space/vevodesirusanejibineberza5t.pdfIn PDF document text
    • http://pofaduxiruk.getenjoyment.net/jobasidifan.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/gofilafixu/sri_krishna_bhajan_telugu_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/befunky_apk_para_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/carnegie_learning_lesson_2._3_assignment_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/all_video_player_free_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/90720656729.pdfIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/best_landscape_lens_for_nikon_d5200.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/amoeba_sisters_video_recap_enzymes_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/aluminum_sheets_for_enclosed_trailer.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/asme_b16._5_latest_edition.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 8

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_off0000e2d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2D7 5784 bytes
SHA-256: a4a5a373fdd7127e4a66acb990e052c619e27fe543a1d01305aca1f822a83d72
font_01_sfnt_off0000f684.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF684 10564 bytes
SHA-256: 1fda35cc3b133db63db636eb1a402453ea03ce90f459f3be9d578c62c7bf3cc5

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