Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6c3be8c3dcee359…

MALICIOUS

PDF

209.8 KB Created: 2021-03-18 03:18:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad9f363b79edf26e17019ddb1f88a3dc SHA-1: 7be2effccf9f1d39167ac7f4da20548ca4ef0a93 SHA-256: b6c3be8c3dcee3593b08445e591d00a1c91b17eb4129b32fc516ccf2075fd45a
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs users to a page discussing how to hack a mobile game, strongly suggesting a phishing or malware distribution lure. ClamAV detection and ML classification confirm its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded URI indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9894

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://ponafet.ru/wix?keyword=how+to+hack+marvel+contest+of+champions+with+game+guardian
    • http://levotavo.scienceontheweb.net/lord_of_the_flies_quiz_chapter_12.pdf
    • https://riwobasafogad.weebly.com/uploads/1/3/3/9/133999818/a2baa.pdf
    • http://eurosett.net/retowasot44zli.pdf
    • http://vumogegotawugub.mypressonline.com/how_to_report_data_in_apa_format.pdf
    • http://goodxday.xyz/xozomuvotavupuj9wi6.pdf
    • https://gesunujas.weebly.com/uploads/1/3/4/5/134509411/9245812.pdf
    • http://unityfree.xyz/91694735214nkkd6.pdf
    • https://boruwimuruliv.weebly.com/uploads/1/3/4/8/134875556/bobojate.pdf
    • https://borerejo.weebly.com/uploads/1/3/4/0/134040615/karoxufutopijovi.pdf
    • http://blacktea.space/142276074222m93u.pdf
    • http://domastmsk.space/dns66_block_ads_apkn0s93.pdf
    • http://fuwijumazawad.mywebcommunity.org/60333131315.pdf
    • http://bidimiw.sportsontheweb.net/fufanajilawinuguremuso.pdf
    • http://kevakigev.medianewsonline.com/pedofako.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gegurobaz.myartsonline.com/chemistry_lab_apparatus_images.pdf
    • https://s3.amazonaws.com/sefiwegegagu/the_magicians_season_5_episode_1.pdf
    • https://s3.amazonaws.com/xeponodij/fadeponosozifem.pdf
    • http://varapotemutura.rf.gd/limixaziwenovu.pdf
    • https://s3.amazonaws.com/jumedemimo/97155183827.pdf
    • http://somepezepu.epizy.com/the_man_who_couldnt_stop_laughing.pdf
    • https://s3.amazonaws.com/lomogas/zosebekexowevuveguzozozid.pdf
    • https://s3.amazonaws.com/bagisi/wumobeludojumuxirixi.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0001161e.bin
b3de2962dcab61d9343581e0c548cc227b83b1a657ff5945c36c6e3857abb6e6		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1161E 157044 bytes
font_01_sfnt_off0002e35f.bin
8d0527b4a2cc97d6eb60a011e49f54015e62227707c724aedab4d02831a52e7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E35F 5748 bytes
font_02_sfnt_off0002f6da.bin
4766fbb3ce0290a8d5e152f4e85e0a2a8ff1d72f1769e0ec744c77ed59c1e615		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F6DA 12440 bytes
font_03_sfnt_off00032103.bin
a8893210ed68aea03521803159510d8e741dcefa43ba8170b2652bae28f3a7fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32103 16288 bytes

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