PDF malware analysis — malicious · 324decf5994bec5b

MALICIOUS

PDF

35.0 KB Created: 2021-06-30 10:14:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17

MD5: a0b139ca9fe8187047dd2bcbd099b64a SHA-1: 5ae4c732c9c28d4dbc77d3483bf153d360c0784b SHA-256: 324decf5994bec5b9128ecb1cec1fd7deb461e9999e83318fa77ab4c548a5c41

142 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links and references to 'free Robux', 'game hacks', and 'free spins', strongly indicating a lure for scams or potentially malicious downloads. The presence of 'cmd-juegos-hack-roblox-2021' in the document body and the linked URLs suggest an attempt to exploit user interest in popular games. While no scripts were explicitly extracted, the PDF structure and embedded URIs point towards a malicious intent to redirect users to potentially harmful sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 6

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.
LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND

Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
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.co/app/431946152/how-to-get-free-robux-on-macbook-pro-2021-ios-game-hack PDF link annotation
- https://www.aeroplanemarket.com/uploaded_files/userfiles/files/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.aeroplanemarket.com/uploaded_files/userfiles/files/coin-master-free-spin-link-new_GM406889139.pdfIn PDF document text
- https://www.aeroplanemarket.com/uploaded_files/userfiles/files/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
- https://www.aeroplanemarket.com/uploaded_files/userfiles/files/roblox-mega-gift-hack_GM431946152.pdfIn PDF document text
- https://www.aeroplanemarket.com/uploaded_files/userfiles/files/best-free-robux-sites_GM431946152.pdfIn PDF document text
- https://www.aeroplanemarket.com/uploaded_files/userfiles/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.aeroplanemarket.com/uploaded_files/userfiles/files/free-robux-books_GM431946152.pdfIn PDF document text
- https://www.aeroplanemarket.com/uploaded_files/userfiles/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
- https://www.aeroplanemarket.com/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.aeroplanemarket.com/uploaded_files/userfiles/files/how-to-cheat-in-roblox-mining-simulator_GM431946152.pdfIn PDF document text
- https://www.aeroplanemarket.com/uploaded_files/userfiles/files/spin-and-coin-link_GM406889139.pdfIn PDF document text
- https://www.aeroplanemarket.com/uploaded_files/userfiles/files/comandos-cmd-juegos-hack-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.aeroplanemarket.com/uploaded_files/userfiles/files/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
- https://www.aeroplanemarket.com/uploaded_files/userfiles/files/minecraft-116-free-download_GM479516143.pdfIn PDF document text
- https://www.aeroplanemarket.com/uploaded_files/userfiles/files/how-to-hack-accounts-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.aeroplanemarket.com/uploaded_files/userfiles/files/free-roblox-items-2021_GM431946152.pdfIn PDF document text
- https://www.aeroplanemarket.com/uploaded_files/userfiles/files/wearedevs-roblox-hack-karava_GM431946152.pdfIn PDF document text
- https://www.aeroplanemarket.com/uploaded_files/userfiles/files/free-roblox-scripting-courses_GM431946152.pdfIn PDF document text
- https://www.aeroplanemarket.com/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
- https://www.aeroplanemarket.com/uploaded_files/userfiles/files/robux-free-2021_GM431946152.pdfIn PDF document text
- https://www.aeroIn macro / runtime command snippet
- 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_off000031e5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31E5	21596 bytes
SHA-256: `07d420f5200211146a679abfc5ddf18161b8ffb3b204418c0b9f5a4647a92ea8`
`font_01_sfnt_off0000611e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x611E	19908 bytes
SHA-256: `d0b0d85d843bc24f4ad61634283f75c235c581405be86ad6cbf7d79b79e2a004`

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