Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b48352819c922d6…

MALICIOUS

PDF

86.0 KB Created: 2021-03-12 13:10:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aedc4fdd4915839f1c85444d8fdcb36b SHA-1: 44e44a45a9c2bfb42663f3ccebd6a53ac4a7114e SHA-256: 5b48352819c922d61ff6cc6d2a41aa2e411f38d18c97a9c115b4ce602e65724a
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit users, possibly through a phishing or social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://golowaki.ru/wix?keyword=escape+the+dungeon
    • http://mailedflkf.site/22187166553qmu5w.pdf
    • http://pedujagafena.22web.org/34002094845.pdf
    • https://kawapojironene.weebly.com/uploads/1/3/1/6/131637385/kekumuj.pdf
    • http://milanomodaitaly.site/19604394496wul0l.pdf
    • http://uk-delfin.ru/esv_bible_citation_mla5uhk3.pdf
    • https://cdn.sqhk.co/jolekusij/fDmjeug/beautiful_hd_wallpaper.pdf
    • http://replyua.site/coc_base_designerf3zz0.pdf
    • http://zofazosedam.iblogger.org/57449542474.pdf
    • http://lajodibibodi.getenjoyment.net/whats_the_lowest_mortgage_rate_for_refinance.pdf
    • http://tunewejewuz.mypressonline.com/78117110257.pdf
    • http://nosilekexiwot.mywebcommunity.org/dizowu.pdf
    • http://thepropheticapp.com/surovekurotetulna9sd.pdf
    • http://pagavopalubutu.scienceontheweb.net/logitech_k800_keyboard_battery_replacement.pdf
    • https://biziremidawa.weebly.com/uploads/1/3/5/3/135397591/199ebf32c.pdf
    • http://jiludedo.iblogger.org/housing_allowance_form.pdf
    • https://zugozoriv.weebly.com/uploads/1/3/4/7/134770463/gajowifiruzitut.pdf
    • https://raxaregos.weebly.com/uploads/1/3/4/3/134363135/6ce7d15b0.pdf
    • https://cdn.sqhk.co/lilokimoz/yBZiaK2/forager_puzzles_guide.pdf
    • https://supavutoni.weebly.com/uploads/1/3/4/7/134713891/7287000.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gofirog.epizy.com/guided_meditation_sleep_asmr.pdf
    • http://poserub.rf.gd/the_best_laid_incentive_plans.pdf
    • http://tubupokus.rf.gd/free_kindergarten_halloween_worksheets.pdf
    • http://putojoner.rf.gd/how_to_earn_extra_money_from_home_legitimately.pdf
    • http://towirasoruxapob.rf.gd/75276595648.pdf
    • http://wotonopeg.epizy.com/67670625847.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001149f.bin
5ed1ecd46e37e9e53e14748276bf88a9474efe073c2f38dbeffc7f98f054b12d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1149F 5164 bytes
font_01_sfnt_off00012636.bin
bc700e85b98a743cd523c18514ee7a5b4b6ecb9b1d02686ec8d37dbbdba144ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12636 10688 bytes

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