Malicious PDF — malware analysis report

Static analysis result for SHA-256 8612dae18173b53a…

MALICIOUS

PDF

74.7 KB Created: 2021-05-31 00:47:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 109ceedb096231e6553dcebfd89fd71f SHA-1: d7dfb48aac8b183b9c14ab3fdc52b13c6ee8c7e8 SHA-256: 8612dae18173b53a254b6d4dddaadb76715ef063d32b7ff2a419c9e84ec0013e
96 Risk Score

Malware Insights

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

The PDF document contains embedded URLs that are flagged as suspicious and are likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to trick users into navigating to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 http://technoculture.cz/admin/upload/file/nujivazemifiligejok.pdf
    • https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a51f395e889---52325716405.pdf
    • http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f86a427003---fikun.pdf
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/16083f1ed40bed---nabovilepijiget.pdf
    • https://soalmatematik.com/userfiles/file/bevakutugufumubijut.pdf
    • http://unnatiwelfareorganization.com/ckfinder/userfiles/files/xotif.pdf
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/a2e8e49237dedb6547c8b6b19c2fca42/95433596148.pdf
    • https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8b684a2f5e---16853150215.pdf
    • http://ytbozhuo.com/upload/file/272220552279.pdf
    • http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f3080e479a---zidepikuzozalet.pdf
    • http://longarmquiltacademy.net/fckeditor/userfiles/file/98168999381.pdf
    • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b05241cf2e5---89577956576.pdf
    • https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608c62a752415---91766491984.pdf
    • https://dmvassociates.com/wp-content/plugins/super-forms/uploads/php/files/5ee63a2cb8ffbeb443e6f0254aa081a0/39182989941.pdf
    • https://communeouchamps.fr/userfiles/file/zudozasifilikuga.pdf
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160a15f7ce9b79---nufoputupebazevafenubi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=how+to+reject+a+job+offer+due+to+low+salary+sample
    • 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_off0000e767.bin
8a6fca5b707788cda02a4ef41c7988cf18b7d355c5adcca918f8b1f378418f2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE767 5672 bytes
font_01_sfnt_off0000faae.bin
fd3b5508858940d0965e4329236c0d0e39bc76018e679cc1161c3f62de18c394		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFAAE 10096 bytes

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