Malicious PDF — malware analysis report

Static analysis result for SHA-256 5568ed2ba41ae0a4…

MALICIOUS

PDF

69.3 KB Created: 2021-03-03 10:20:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 5ebf9395940781b168413d04ade21918 SHA-1: d9c023566e3279d6ff27a96874f78f72b0bc2a1f SHA-256: 5568ed2ba41ae0a451025f96a2b79321df5a15d20a098c9362633f1606c44fda
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a secondary payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to educational content, which is a common tactic for phishing documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/award?keyword=chords+inscribed+angles+and+triangles+worksheet+answers PDF link annotation
    • https://cdn.sqhk.co/gebijowokobe/Tp6chFB/20991968572.pdfIn PDF document text
    • https://cdn.sqhk.co/wakivugex/cIIxhcR/vapusazikapoforisuguso.pdfIn PDF document text
    • https://cdn.sqhk.co/suvotoruwot/6gcaVgN/kuzexewelubowidebefer.pdfIn PDF document text
    • https://cdn.sqhk.co/xekemini/mSRoCjh/tugemudasesudiga.pdfIn PDF document text
    • https://cdn.sqhk.co/zamupefa/iehi16D/moxag.pdfIn PDF document text
    • http://ladirojenovezoj.mygamesonline.org/what_is_the_easy_song_to_play_on_guitar.pdfIn PDF document text
    • https://cdn.sqhk.co/xubewarow/hcUjjaD/the_legacy_apartments_longmont_colorado.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/xofalepelala/12766998067.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/suxelekupepisan.pdfIn PDF document text
    • https://s3.amazonaws.com/kosamupim/google_chrome_apps_for_pc_free.pdfIn PDF document text
    • http://molarawofopojib.rf.gd/journal_entries_accounting.pdfIn PDF document text
    • http://romofimor.onlinewebshop.net/technical_analysis_trading_training.pdfIn PDF document text
    • http://dumudolaba.epizy.com/zasusebavizuk.pdfIn PDF document text
    • https://s3.amazonaws.com/sabobenuwe/border_radius_input_android_studio.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_off0000d25d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD25D 5404 bytes
SHA-256: 9d45ff057d38f8dcc5f0303eb1647c29e846984ce78d428e1c032578b3743226
font_01_sfnt_off0000e4c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C1 10396 bytes
SHA-256: d8e51dc4a1618af0071294451ad993a5ec360a801dead55fc18fd58089b84575

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