Malicious PDF — malware analysis report

Static analysis result for SHA-256 7373d9ae6360ea2a…

MALICIOUS

PDF

41.3 KB Created: 2021-05-01 20:59:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ce60b44432e5a5e48e4e13bf65c7d5f6 SHA-1: edb01c7d0ea9e4e97b09ff79b84a0ab80ddee79b SHA-256: 7373d9ae6360ea2a1a18f5f2b6b4ed2968a1a872c428e4ddb5c8a9ec589dc173
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'free Robux' and game hacks, directing users to a suspicious URL. It also includes instructions to disable security software, indicating a malicious intent to facilitate further compromise. The embedded URLs suggest the document is part of a phishing campaign designed to trick users into downloading malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

Heuristics 6

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://netcdn.xyz/app/431946152/roblox-how-to-get-free-unlimited-robux-hack-glitch-game-hack PDF link annotation
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/how-to-use-cheat-engine-on-roblox-swordburst2.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/how-to-hack-prison-break-roblox.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/free-safe-roblox-injector.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/roblox-build-a-boat-for-treasure-fly-hack.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/injustice-oa-roblox-hack.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/cheat-engine-on-roblox-2021.pdfIn PDF document text
    • http://technibuild-group.com/uploaded_files/userfiles/files/free-tay-k-roblox-shirt.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/roblox-get-free-gear.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/sex-cheat-codes-roblox-sound-id.pdfIn PDF document text
    • http://technibuild-group.com/uploaded_files/userfiles/files/roblox-shinobi-origin-cheat.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000409b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x409B 25984 bytes
SHA-256: 7f7ed7687f79e2492f76d322230838e0f7bdee50e2e0d4a719c33fde367bc099
font_01_sfnt_off00007ba0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA0 19660 bytes
SHA-256: c99e5316a053bd391a92bbeb851da7e8a14aee690440f08f0e732a4a0ab35524

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