Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e94a5e2ac633cfb…

MALICIOUS

PDF

87.8 KB Created: 2021-03-05 17:50:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: d06dc011840276713f7f829ecc485397 SHA-1: e73f6e2282773664b701fb50b8a05f7a0de8346a SHA-256: 1e94a5e2ac633cfbb6c022c6c687a9040562432e26330a679b5313877866279d
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a critical heuristic firing for ClamAV detection. An external URI pointing to 'soxebez.ru' was extracted, suggesting a redirection to a malicious site. Although no scripts were explicitly extracted, the PDF structure and the presence of an external URI indicate an attempt to lead the user to a potentially harmful resource, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://soxebez.ru/strik?utm_term=when+do+you+double+down+on+blackjack PDF link annotation
    • http://nuxefigemotak.22web.org/numbers_checkbook_register_template.pdfIn PDF document text
    • http://momijuluxesapek.iblogger.org/nedutumupatexele.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410953/normal_5ff550db3f1aa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376105/normal_5fca78832eddc.pdfIn PDF document text
    • https://cdn.sqhk.co/ziriziwebu/dja2jiD/sezudogelibofoba.pdfIn PDF document text
    • https://cdn.sqhk.co/rufebumu/jgAMhjj/xenumivonofelabupemus.pdfIn PDF document text
    • https://cdn.sqhk.co/bikakigiben/kjdxDfF/punozatifubifutewonij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447086/normal_600e287504cd2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420604/normal_5ff22720d8d25.pdfIn PDF document text
    • https://cdn.sqhk.co/retagigimusa/ifgdjaG/71655017283.pdfIn PDF document text
    • http://wovogabaposexe.22web.org/32703109103.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/levumoduf/free_email_signature_template_photoshop.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/goxujipenuxarijoturalikit.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/tebukezebatonirijalajowed.pdfIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/34473645222.pdfIn PDF document text
    • http://vigewewemoxij.rf.gd/alcohol_withdrawal_guideline.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/kalakalappu_1_movie_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzotisenixava/pretty_piano_songs_sheet_music.pdfIn PDF document text
    • http://gokutirimavav.rf.gd/burroughs_full_keyboard_adding_machine_repair_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fadadedezeker/shiv_aghor_mantra.pdfIn PDF document text
    • https://s3.amazonaws.com/xijilesuzuxo/lost_stars_main_characters.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_off000119a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119A6 5240 bytes
SHA-256: a560a2f016f2fc613a5532fded9eecc9534f108441899dda447d32906f3bab62
font_01_sfnt_off00012b9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B9D 11212 bytes
SHA-256: c3d737f44bb75ce01c2c84457c1ba1e65a4c9953850ded46022b3d6e389bcf52

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