PDF malware analysis — malicious · 143091d6688b536b

MALICIOUS

PDF

34.6 KB Created: 2021-06-19 00:07:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 8bbd919fc76b8a19b246f3841b3d1403 SHA-1: 17628750ae0de361399c2cfe96dfcbab9d7ec4a4 SHA-256: 143091d6688b536bbb3ecb034ca019bba712fcac24835b74491b7815959b3d05

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing for a game hack redirect lure, pointing to a specific URL. The document body also contains this URL and references 'free Roblox card code generator 2021', indicating a social engineering attempt to trick users into visiting a potentially malicious site. The ML classifier also flagged this PDF as malicious with high confidence.

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/free-roblox-card-code-generator-2021-game-hack PDF link annotation
- https://www.liputanbali.com/assets/CKImages/files/roblox-skina-free-copy-paste_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/microsoft-roblox_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/coin-master-hack-pc-download_GM406889139.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/sake-roblox-hacks_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/free-spin-coin-master-new-link_GM406889139.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/autospin-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/games-like-bloxbutg-in-roblox-for-free_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/coin-master-free-spins-uk_GM406889139.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/how-to-get-free-robux-no-survey-2021_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/minecraft-creative-mode-free_GM479516143.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/free-coin-master-game_GM406889139.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/coin-master-online-hack_GM406889139.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/how-to-get-minecraft-for-free-on-ipad_GM479516143.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_off00002ff0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2FF0	22056 bytes
SHA-256: `71e10d0cf7ff62a54b8edea3d2fede49cb7581493e91918a159136905ef3d9c5`
`font_01_sfnt_off000060f5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60F5	19328 bytes
SHA-256: `1509024dfd10c3faba1d85347a75bf81a4d05c51aeff7d340fba1b5312c86c3e`

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