PDF malware analysis — malicious · 46f4de9097789961

MALICIOUS

PDF

46.1 KB Created: 2021-06-09 13:18:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: bb7af1845d8ff5ffb4cfa8de6f7d9501 SHA-1: 6721ff16376f3a32ae71de5f049d89e900b860fa SHA-256: 46f4de9097789961f60b320af2b9bba34bac99b0383ca91c0910d5214aaeadd7

122 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' lure, specifically pointing to a URL on netcdn.tw. The document body, though partially garbled, contains similar text and the same URL, reinforcing the lure. The presence of a password-protected archive lure suggests the actual payload is hidden, likely downloaded or accessed via the provided link.

Machine Learning

Nyx PDF Classifier malicious score 0.9864

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.
Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE

Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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 https://netcdn.tw/app/431946152/how-to-hack-any-user-in-roblox-game-hack PDF link annotation
- https://tjiko.de/wp-content/uploads/fsqm-files/free-tiktok-followers-app_GM835599320.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/how-to-get-free-robux-109_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/how-to-hack-un-used-roblox-accounts_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/free-roblox-accounts-with-robux-2021-september_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/hack-account-roblox-2021-edit-this-cookies_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/free-robux-link_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/download-roblox-pc-windows-10-free_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/free-roblox-promo-codes-september-2021_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/minecraft-free-version_GM479516143.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/roblox-jailbreak-free-cars_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/free-tiktok-likes-2021_GM835599320.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/files59-roblox-hack_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/hack-to-join-anyone-on-roblox_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/hack-robux-2021_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/hacked-tycoon-roblox_GM431946152.pdfIn PDF document text
- https://krnl.rocksIn 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
`stream_004_off0000514b.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x514B	27348 bytes
SHA-256: `ac2ff674f1db53cac8b62db4156d811f0e42d2379215031cb0f31878740b3f85`
`font_01_sfnt_off0000902b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x902B	18712 bytes
SHA-256: `279f472f82795720684654fa94ae4dfc47d9ddb2ed0cf3162d422d11dfbc24a4`

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