Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d43f376e4ea445d…

MALICIOUS

PDF

64.8 KB Created: 2021-01-30 22:08:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 340561f2c2b081b628d969a681bd8e07 SHA-1: 91ecfab6a1df8eb9a4f2d912785764562c8b23c4 SHA-256: 3d43f376e4ea445d12d9c14d0e0c006dc2279d788b43944a83b95125a06510a3
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into visiting a phishing or malware distribution site. No scripts were extracted, but the PDF structure and embedded URI suggest a phishing lure.

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://leonvi.ru/123?utm_term=national+sport+of+south+korea+crossword PDF link annotation
    • https://cdn.sqhk.co/pezolaje/cFXjbrO/26467864791.pdfIn PDF document text
    • http://weinmvc.net/391604977570rpbe.pdfIn PDF document text
    • http://rusakova.space/alt_codes_exponent_1ezzwf.pdfIn PDF document text
    • https://cdn.sqhk.co/rapowipijes/ijzgh04/learn_to_play_piano_book_download_free.pdfIn PDF document text
    • https://cdn.sqhk.co/kigaratak/Mgd0kjh/36906776761.pdfIn PDF document text
    • https://cdn.sqhk.co/xovujiroveg/MjagcTk/movie_soundtrack_trivia_questions_and_answers.pdfIn PDF document text
    • http://sayfelengs.space/oceanhorn_2_knights_of_the_lost_realm_ps4xzjkw.pdfIn PDF document text
    • http://raffle.website/25747451735zdwj5.pdfIn PDF document text
    • https://cdn.sqhk.co/mugapowejog/elRBjf8/eqfy_equalizer_apk_free.pdfIn PDF document text
    • https://cdn.sqhk.co/bafebolabefo/bPhawhd/45087123724.pdfIn PDF document text
    • https://cdn.sqhk.co/judawube/hiH4hcf/50550815353.pdfIn PDF document text
    • https://cdn.sqhk.co/besawevij/YqbJ4ia/art_wallpaper_hd_free_download.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/zunaduxa/caa_thomas_cook_atol_claim_form.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/bluestacks_win_8_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/yahoo_mail_settings_for_android_app.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/using_irregular_verbs_exercise_2_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/nios_admit_card_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/65005787503.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/aplikasi_to_word_apk_pro.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_off0000c164.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC164 5368 bytes
SHA-256: 863fc2507998a2ee82fe012ef0d68ea635d85639bf7529b547456517bcf2921c
font_01_sfnt_off0000d3b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3B7 9920 bytes
SHA-256: 17c4f9f79dbcdae96ff6e78e6ecd58a534261987f35d53c67b66a3fbc50c23ab

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