Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fd9966c11cbbeb0…

MALICIOUS

PDF

90.2 KB Created: 2021-07-02 03:54:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 16dbeb63f65c65017a7348cecc227ad3 SHA-1: 9bd0e3abe8ec944a8ceb9dd07900ee6d18e1ee2c SHA-256: 0fd9966c11cbbeb0319a926e9964c53e262cb46fb93b8e183f4628cc0030f713
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high probability of malicious intent. The PDF contains embedded URIs that likely lead to phishing or malware distribution sites. Although no scripts were explicitly extracted, the presence of embedded URLs and the PDF_URI heuristic suggest the document's primary function is to redirect users to external malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://wastran.ru/uplcv?utm_term=the+sims+4+get+famous+cheat
    • http://bright-inter.com/file_media/file_image/file/72439240927.pdf
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609caf5a62897---85152402560.pdf
    • https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/600da89731378f3f359b3d91c8e479ce/vuzofizowomojosolekede.pdf
    • http://liccuza.ro/stiri_files/file/ponakazutuzatazajaguf.pdf
    • https://higher-reason.com/wp-content/plugins/super-forms/uploads/php/files/1sfthk8eitk14bomb5frj1q66g/11039840372.pdf
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7cfd4b27b0---59269904133.pdf
    • https://service-panev.com/userfiles/xofisakuda.pdf
    • http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/d5f490ff0deff26fd92f4711b0c667e1/fakutufidev.pdf
    • http://associacaoguainumbi.org.br/wp/wp-content/plugins/formcraft/file-upload/server/content/files/1607cc897a9777---fopasujomaxoxijovo.pdf
    • http://happyhanool.com/ckupload/files/najelaluzekota.pdf
    • http://kapelski.pl/userfiles/file/64217391931.pdf
    • http://czdashan.cn/uploadfile/file/2021050404381073499.pdf
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/1607acba3e3199---kejepixenezoliperir.pdf
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/63cvt3rg7evloieud0t0vl1421/71483880914.pdf
    • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/1fg7qv9096njpkek68psq6chuo/kobukoboz.pdf
    • https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080896dc482c---21110713275.pdf
    • http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b56f8072ac8---keruridizipekewe.pdf
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/2258bc789952ffc8816451c29909ba4a/dirazejuxus.pdf
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608005f60083b---jigibetorapiburi.pdf
    • https://www.treehousecare.org/wp-content/plugins/formcraft/file-upload/server/content/files/160763143c74ca---zuvapejevaw.pdf
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/16089387844f9c---womenanivizutotigapozamu.pdf
    • https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1608c11ac6b512---97314379053.pdf
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608499a25f0a1---giwuwufupilukow.pdf
    • https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b20ad12d66f---bekosavetetulelegujekak.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc44.bin
6c1e6d15c820082f8b40d55f1b349e702da613f0d61f75800d45ea5e6e749ac1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC44 10676 bytes
font_01_sfnt_off000114e2.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x114E2 16792 bytes
font_02_sfnt_off00012cf4.bin
f00787c8562115d16fe7ffc9deca24d9072b4250f3c2e4e7b053b3b63e355c9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12CF4 17788 bytes

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