PDF malware analysis — malicious · af5755d9cc842ff8

MALICIOUS

PDF

35.7 KB Created: 2021-06-30 11:36:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17

MD5: 55a9cd242b6d384f8462e655e157d140 SHA-1: fd32b409d68d2095d897f776eff87bebe6432df9 SHA-256: af5755d9cc842ff8f946072eff1e7519b03adfd949507719acb2980da28cbecf

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links and text referencing 'free Robux' and 'game hacks', directly indicating a scam lure. The primary URL, http://netcdn.co/app/431946152/roblox-free-robux-scam-uncopylocked-game-hack, is identified as a high-risk redirector for this scam. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or social engineering attack, likely delivered as a spearphishing attachment.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

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.
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.co/app/431946152/roblox-free-robux-scam-uncopylocked-game-hack PDF link annotation
- https://trustindoutama.com/assets/CKImages/files/robux-generator-no-survey_GM431946152.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/coin-master-free-spins-and-coins-for-today_GM406889139.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/free-roblox-obc-generator_GM431946152.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/red-shirt-free-roblox_GM431946152.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/free-robux-link_GM431946152.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/coin-master-apk-hack-2021-ios_GM406889139.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/need-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/roblox-hack-copy-and-paste_GM431946152.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/cool-hacks-for-roblox_GM431946152.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/how-to-hack-unblock-roblox-password-on-computer_GM431946152.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/robux-with-no-email-no-hacks-no-buyings_GM431946152.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/how-to-get-free-unlimited-robux-by-hacking_GM431946152.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/elite-hacks-robux_GM431946152.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/robuxglobalcom-no-verification_GM431946152.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/free-robux-images_GM431946152.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/how-to-hack-any-roblox-account-2021-easy_GM431946152.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/roblox-hack-script-infinite-health_GM431946152.pdfIn PDF document text
- https://trustindoutama.com/assets/CKImages/files/how-to-change-your-name-in-roblox-for-free_GM431946152.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00003220.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3220	22520 bytes
SHA-256: `6aacfc45f9d228d8886b954a2c76acb83e24663f2009b4d2f343a4bc65915ea3`
`font_01_sfnt_off000064a5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64A5	19752 bytes
SHA-256: `ac0cc693269cd3f376b84e0ce1194eecf9478fb0f5bbb2e7aab18a6c0ad8a20e`

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