Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b74723650fe6f65…

MALICIOUS

PDF

82.7 KB Created: 2021-03-25 05:42:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 288541848a94dba796637aa0d2049cf3 SHA-1: b83b502c5923fd664fffcb81738094025f84d4f3 SHA-256: 4b74723650fe6f6530b35c3df16f71fd54e67a2f4bab74a4e73d8035db88402c
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into downloading a malicious payload. The document body, though heavily obfuscated, appears to be a lure related to a search query, reinforcing the phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://soxebez.ru/award?keyword=beethoven+sonata+pathetique+pdf PDF link annotation
    • http://hairhome.moscow/1645471453djdhg.pdfIn PDF document text
    • http://ladekepevij.mygamesonline.org/peptic_ulcer_pathology.pdfIn PDF document text
    • http://timinome.getenjoyment.net/how_to_sodastream_fizzi.pdfIn PDF document text
    • http://getoditatogufop.22web.org/market_analysis_sample.pdfIn PDF document text
    • https://cdn.sqhk.co/mowamukar/kDghhif/zombs._io_hacked_version.pdfIn PDF document text
    • http://phrensy.co/sunrace_bar_end_shiftercoohr.pdfIn PDF document text
    • https://cdn.sqhk.co/satukevaguka/Ajfyawn/live_stream_tv_channels_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/kososojog/hiejcev/cover_the_fruit_game_online.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/tapelu/59360221038.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/what_is_the_book_go_ask_alice_about.pdfIn PDF document text
    • http://rixogapokat.epizy.com/how_to_crack_a_cannon_electronic_safe.pdfIn PDF document text
    • http://kuroxawoja.rf.gd/nojijafeduputabofimix.pdfIn PDF document text
    • http://bolirazebaf.myartsonline.com/27903112051.pdfIn PDF document text
    • https://s3.amazonaws.com/safenalavojuwu/onkyo_remote_codes_for_spectrum.pdfIn PDF document text
    • http://sulorowanutabu.atwebpages.com/wewafutixub.pdfIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/76829425994.pdfIn PDF document text
    • http://bepizokebador.epizy.com/fluke_network_tester_report.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/plagiarism_quiz_answer_key.pdfIn PDF document text
    • http://pumejusatojajeg.rf.gd/bombay_velvet_full_movie_480p_bluray.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/33096661452.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/ff8_seed_written_test_answers.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0CB 5236 bytes
SHA-256: e18c528665a4534209c966323ffbbf560f4361422e5ebc0f59639c10c4d222e0
font_01_sfnt_off000102a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102A7 11156 bytes
SHA-256: dc755808873af38ec3877f6e09c3fcec91175925a76dd77ba2ddbb88ddcbe516
font_02_sfnt_off00012820.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12820 16120 bytes
SHA-256: 2cfc97915d250804213c9b0e6ad261e0979cd38371fb36ec9174dea58a153a3e

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