PDF malware analysis — malicious · d64d88a0bf0f1331

MALICIOUS

PDF

34.4 KB Created: 2021-07-09 20:41:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 15325728eecd64174c6bd86a024b3ab7 SHA-1: 1887201e6af916bb58bf7aa666badbb8ca6f91c9 SHA-256: d64d88a0bf0f1331a894789c4d2f79b100ab35eb6fa278dfd168196abbbed927

122 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a remote-support lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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.
Remote-support tool lure high SE_REMOTE_SUPPORT_LURE

Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
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/479516143/wurst-18-9-game-hack PDF link annotation
- https://www.dealcafe.me/uploaded_files/userfiles/files/give-me-robux-now_GM431946152.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/free-robux-codes-on-android_GM431946152.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/wurst-client_GM479516143.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/robux-hack-fast-and-easy_GM431946152.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/coin-master-hack-apk-ios_GM406889139.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/roblox-login-hack-robux_GM431946152.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/how-to-get-free-1-million-robux-new_GM431946152.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/coin-master-online-hack-2021_GM406889139.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/cbr-roblox-hacks-november-2021_GM431946152.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/roblox-hack-generator-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/free-robux-only-1-step_GM431946152.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/free-roblox-app_GM431946152.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/how-to-hack-for-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/free-games-like-minecraft_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_off000033db.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x33DB	21560 bytes
SHA-256: `ba6086cf8141cabcb007eafbccadfe812882c79db1ad723d60aadf84bb2d0bd3`
`font_01_sfnt_off000062ea.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62EA	18556 bytes
SHA-256: `d4ca89d62dff2994f76510eecd1359da571a3d2194b84bf96e1985e5febce106`

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