PDF malware analysis — malicious · 54f39c6136ab7746

MALICIOUS

PDF

34.7 KB Created: 2021-07-04 02:40:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27

MD5: 62a91252d2a4ac3276e911d829dc5191 SHA-1: 99d1b62370a67148746e4b10508f45c8903f4345 SHA-256: 54f39c6136ab774612325f3c9250e92955ef9efcbf73af6f58e3001176aad62e

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a lure for game hacks and currency generators, directing users to a known malicious redirector. The embedded URL http://netcdn.tw/app/406889139/hack-crack-for-coin-master-currency-game-hack is a primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or social engineering attack aimed at driving traffic to potentially harmful sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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
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/hack-crack-for-coin-master-currency-game-hack In PDF document text
- https://dolphintour.vn/images/uploadsfiles/how-to-hack-legend-of-the-bone-sword-roblox_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/how-often-pubg-uc-reviewed_GM1330123889.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/coin-master-free-spins-fb_GM406889139.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/como-descargar-roblox-hackeado_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/roblox-winter-games-lodge-free_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/proxy-hack-roblox-download_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/free-roblox-cards-pin-number_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/free-daily-spin-coin-master-game_GM406889139.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/roblox-free-domino-crown-promo-code_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/roblox-treelands-hack_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/free-robux-plsss_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/como-hackear-coin-master-iphone_GM406889139.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/roblox-logo-maker-free_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/robux-hack-tool-2021_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/free-tiktok-views_GM835599320.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
`stream_002_off0000311c.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x311C	22912 bytes
SHA-256: `96d8c4b9881c120d02f86d55ebbad7f84a5d8f68ed8b669aae3f5914b7326e42`
`font_01_sfnt_off00006481.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6481	18488 bytes
SHA-256: `811fb9faacbe1105700380dc3d300d6af0061f738aadd421b3841696441b41e5`

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