Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba32ad318b4fbb56…

MALICIOUS

PDF

47.9 KB Created: 2021-06-11 04:25:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9e2538ec815334fba0b49e62b11940d6 SHA-1: 53f0a3900fc3778a63a1cef461b114807b3c120a SHA-256: ba32ad318b4fbb56e650af76ab97a11abbb18875126ea158659d8950ea1335b2
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains lures related to game hacks and redirects to external URLs, indicating a phishing or malware distribution attempt. The ML classifier strongly flagged this PDF as malicious. While no scripts were directly extracted, the PDF structure and embedded URIs suggest it's designed to exploit user interest in game cheats to lead them to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.tw/app/431946152/how-to-do-hacks-in-roblox-jailbreak-game-hack PDF link annotation
    • http://aeridefense.com/image/data/files/minecraft-hack-ios_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/roblox-laser-tycoon-cheats_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/mcpe-116_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-free-gold-cards-link_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/minecraft-pe-apk_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/roblox-free-download_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-get-admin-commands-on-roblox-jailbreak-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5082 25676 bytes
SHA-256: 34e8f77d1a256ba0cefbcc09df847ee71cb485600bff938c56f19d54e1d1bf04
font_01_sfnt_off00008cab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CAB 2984 bytes
SHA-256: 889cfc2fd0afa9ea114d6666204c6ce0548d0aae2cba345827d317498c4c06bc
font_02_sfnt_off000096d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96D7 18800 bytes
SHA-256: 329315404c42323f30836ef56799c7c0dfc5eeebebe06c76e3f562a8e5adfe33

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