PDF malware analysis — malicious · 13ffc1b785f87132

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 02:40:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 198a93c108d547cd51091c333fbec288 SHA-1: 929f71e8f22f824436a966fdb654bc5f2229042c SHA-256: 13ffc1b785f87132ee2a5c32c7a419b4870127edaf5c9b76e98c81c918a0bf9f

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a high-severity heuristic indicating it links to a 'free generator / game hack' redirector, which is a common lure for users seeking cheats or exploits. The document body and embedded URLs reinforce this theme by mentioning 'free coins and spins' and various game hacks. This suggests the primary goal is to trick the user into visiting a malicious URL that likely leads to a malware download.

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.tw/app/406889139/free-coins-and-spins-2021-game-hack PDF link annotation
- https://www.maximabm.com/uploaded_files/userfiles/files/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/earn-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/roblox-hack-20210-robux_GM431946152.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/cheat-roblox-v3rmillion_GM431946152.pdfIn PDF document text
- https://www.maximabm.com/uploaded_files/userfiles/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/free-minecraft-printables-food-labels_GM479516143.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
- https://www.maximabm.com/uploaded_files/userfiles/files/get-free-spins-on-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
- https://www.maximabm.com/uploaded_files/userfiles/files/how-to-get-free-admin-in-roblox_GM431946152.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/prison-life-roblox-hacks_GM431946152.pdfIn PDF document text
- https://www.maximabm.com/uploaded_files/userfiles/files/minecraft-games-free-download_GM479516143.pdfIn PDF document text
- https://www.maximabm.com/uploaded_files/userfiles/files/como-hackear-cuentas-de-roblox_GM431946152.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/boga-boga-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.maximabm.com/uploaded_files/userfiles/files/free-robux-instantly_GM431946152.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/free-robux-hack-working-2021_GM431946152.pdfIn PDF document text
- https://www.maximabm.com/uploaded_files/userfiles/files/minecraft-rtx-download-free_GM479516143.pdfIn PDF document text
- https://www.maximabm.com/uploaded_files/userfiles/files/free-robux-download-generatgor_GM431946152.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/e-free-roblox_GM431946152.pdfIn PDF document text
- https://www.maximabm.com/uploaded_files/userfiles/files/free-minecraft-skin-packs_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_off00002ff4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2FF4	22516 bytes
SHA-256: `fb14cf05b4f1513e9afbe81afeabcf188198f79c165320f1f9e9202135b7b5ec`
`font_01_sfnt_off0000621b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x621B	18644 bytes
SHA-256: `4c4e65cba5d2f67dd58f66294ad28bd569e509cdb282affccbe4ebd21773572e`

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