Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfb49411d424ecc4…

MALICIOUS

PDF

101.1 KB Created: 2021-03-19 23:20:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d36fe4b3385d539e07c51ee80926eb0 SHA-1: 1bf78a6d7bfb04c902eed72ddb2faf28bb6bf039 SHA-256: dfb49411d424ecc43f9928f69f41b4b56529adebe74f968e3b74b352575a95f8
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, masquerading as a search result for a product. This technique is commonly used for phishing or to deliver further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://maypoin.ru/award?keyword=aspire+3+a315+51+pdf
    • http://nelilovodik.scienceontheweb.net/mvc_interview_questions_for_5_years_experienced.pdf
    • http://toxaxugepevu.iblogger.org/bissell_little_green_proheat_portable_carpet_and_upholstery_cleaner.pdf
    • http://damodudajipofem.22web.org/zomuranakewujakoj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/lorifawuvawot/66721190200.pdf
    • https://s3.amazonaws.com/xenavuxa/55224687888.pdf
    • https://s3.amazonaws.com/zunewidimem/bleach_vs_naruto_apk_android.pdf
    • http://xolavozezimodan.onlinewebshop.net/bhagavad_gita_full_book_in_gujarati.pdf
    • https://s3.amazonaws.com/legobegutulo/chambal_ki_kasam_movie.pdf
    • https://s3.amazonaws.com/vifusupegiza/dubitejerinilanogavix.pdf
    • http://jojisoxig.epizy.com/medical_care_research_and_review_author_guidelines.pdf
    • https://s3.amazonaws.com/mawesenasijoser/sudenufaxadunolasetevomo.pdf
    • https://s3.amazonaws.com/rodigapigeta/badmaash_dil_song.pdf
    • https://s3.amazonaws.com/kezemiradigu/kijigajeluf.pdf
    • http://wovuluvoju.onlinewebshop.net/rumonuja.pdf
    • https://s3.amazonaws.com/sosupejuxofedo/worx_landroid_review_2017.pdf
    • http://sogoxutagejuno.atwebpages.com/79617142351.pdf
    • http://xukenefurirog.epizy.com/rapejujefopanudula.pdf
    • http://woxutubutofewev.rf.gd/jozimid.pdf
    • https://s3.amazonaws.com/zunaduxa/vatican_skip_the_line_self_guided_tour.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_off000134d9.bin
aa054316f225f2ae846d8927f0337c873b9556135e28db6ef51d35dbf3ecaa8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x134D9 5332 bytes
font_01_sfnt_off00014713.bin
32b67b69c5707615ca5669ff3a5e8b762c2322b46203e19fb145d663fad3a10e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14713 28516 bytes

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