PDF malware analysis — malicious · d80b33d936e8ac51

MALICIOUS

PDF

32.1 KB Created: 2021-07-19 03:38:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17

MD5: 48ac37c50608583808f84d10a7524ac0 SHA-1: a06389f94d888dddcfc0a00da73df911586f2d5e SHA-256: d80b33d936e8ac51a1c76d2d89cb557ea8db6dca57a4120da15fd0bcbf01dfec

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains lures for 'free generator / game hack' content, specifically linking to 'free-tiktok-fans-and-likes-game-hack'. This pattern is consistent with phishing or scam attempts designed to trick users into visiting malicious sites. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple embedded URLs further supports a malicious intent, likely to download a second-stage payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9900

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 http://netcdn.tw/app/835599320/free-tiktok-fans-and-likes-game-hack PDF link annotation
- https://itbits.ie/images/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
- https://itbits.ie/images/free-robux-site_GM431946152.pdfIn PDF document text
- https://itbits.ie/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
- https://itbits.ie/images/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
- http://itbits.ie/images/blox-fish-free-robux_GM431946152.pdfIn PDF document text
- https://itbits.ie/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
- https://itbits.ie/images/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
- https://itbits.ie/images/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://itbits.ie/images/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
- http://itbits.ie/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- http://phenomventures.com/In PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000290e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x290E	22916 bytes
SHA-256: `aa5491f7ca31c145218e079f7129f6d96dc31ee32838436de53eb4faa3c7bb32`
`font_01_sfnt_off00005c81.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5C81	17856 bytes
SHA-256: `73670565195d1614abdebf4593265cc7a8d42409e9f7addc13b51e248eeb6564`

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