PDF malware analysis — malicious · b0abe9409c02df92

MALICIOUS

PDF

35.3 KB Created: 2021-07-07 08:53:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: df43ac7aaf87cb443e995e0b2538c6e0 SHA-1: bb27c01e62e848d8ad86742547325c18799edc0a SHA-256: b0abe9409c02df9295b958b9ce357f17fbabdcde6ee33bebe39ee3184fafba17

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to malicious redirectors, specifically advertising game hacks and generators for popular games like Coin Master and Roblox. The ML classifier strongly flagged this PDF as malicious, and heuristic rules indicate it's designed to lure users to potentially harmful sites. No scripts were extracted, but the embedded URLs and document content strongly suggest a phishing or scam attempt.

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/coin-master-rewards-2021-game-hack In PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/nopde-engine-lua-script-hack-roblox_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/how-to-get-free-vip-in-a-roblox-game_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/free-robux-folder_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/roblox-redeem-card-hack-2021_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/minecraft-anarchy-server-no-hacks_GM479516143.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/pokemon-go-free-mask_GM1094591345.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/how-to-get-free-followers-on-roblox_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/coin-master-hack-that-actually-works_GM406889139.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/roblox-cheat-codes-for-robux-2021_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/roblox-free-sunglasses_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/descargar-roblox-para-pc-hackeado_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/hacks-minecraft_GM479516143.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/electric-state-roblox-hacks_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/coin-master-game-hunters-club_GM406889139.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/free-bacon-roblox_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/free-robux-no-human-verify_GM431946152.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_off00003361.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3361	22632 bytes
SHA-256: `5ce12a86969f965b820e009e9685b0c14ced211207131b74e0f7cd6ad85dd820`
`font_01_sfnt_off00006613.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6613	18572 bytes
SHA-256: `cfaa81896c26697e859a4e81b12695d0381909fc96c2a4cad24004b442f99461`

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