Malicious PDF — malware analysis report

Static analysis result for SHA-256 895393d43a915070…

MALICIOUS

PDF

71.4 KB Created: 2021-02-13 18:05:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 25c4bbbee650558c8a0256c03169ded7 SHA-1: eafd1d348fc1696369ac5179932b582a34a60fac SHA-256: 895393d43a9150700ab1123ec831041924ce02b7dc618bb0de34417a4294a8f9
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 website related to 'violent video games unblocked', likely as a lure. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan PDF. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wix?keyword=violent+video+games+unblocked
    • https://xotufidew.weebly.com/uploads/1/3/1/8/131856134/126451.pdf
    • https://tatelemu.weebly.com/uploads/1/3/1/1/131164239/mawojevuveseki-wigudarodo-pomaxazuribag-tifaxuj.pdf
    • https://cdn.sqhk.co/biwizalibe/ficRmhd/jiruzubof.pdf
    • https://cdn.sqhk.co/tudusiki/4wsieii/european_rowing_championships_2020_results.pdf
    • http://bluebadgeform.com/35308290728hm5yo.pdf
    • http://am-sound.ru/bancomer_movil_apk_descarga7eni2.pdf
    • https://zazibarem.weebly.com/uploads/1/3/0/7/130775746/6673592.pdf
    • https://putofikanavo.weebly.com/uploads/1/3/0/7/130738484/kamelisi.pdf
    • http://instapriz.website/sage_the_gemini_2020_songs2ty0t.pdf
    • http://recepty-dd.info/negejuzuvibasixuojmh.pdf
    • http://innov-cis.net/tapoveputeniziveromuwuwewln669.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vijanemafe.rf.gd/calendrio_2019_excel_para_anotaes.pdf
    • http://fipuxogililego.epizy.com/ben_10_ben_10_movie.pdf
    • http://sopigovo.rf.gd/niwukowalepovalixasupowux.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_off0000d99c.bin
55eeb3314dc6f16ee144b7e1ef5a9b95d71fedc79c4d913e1ca78ec19d9baf39		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD99C 5392 bytes
font_01_sfnt_off0000ebf5.bin
a66954bf26b2872ad9ea38080bc30cf351d7fb288885196c42e1f15712fadcbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF5 11116 bytes

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