PDF malware analysis — malicious · 22495747b60e89b9

MALICIOUS

PDF

35.1 KB Created: 2021-07-09 18:00:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 5be84277eeb53059a09645bf8a915ba7 SHA-1: c949f4411a9d515b4313fe5bef8cbb454ea2c2b1 SHA-256: 22495747b60e89b93da0814daf448cb137a57f09c5a4da0639029ace90e71cc5

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks to entice users into clicking embedded links. Several heuristics indicate these links lead to known malicious redirector infrastructure, specifically pointing to 'http://netcdn.tw/app/406889139/coin-master-hack-tool-without-human-verification-game-hack'. The document's content and structure suggest it is designed to deliver a secondary payload or lead users to a phishing site. No scripts were extracted from this sample.

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-hack-tool-without-human-verification-game-hack In PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/how-to-get-gold-cards-on-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/master-8-ball-pool-free-coins_GM406889139.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/wurst-115-2_GM479516143.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/www-robux_GM431946152.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/roblox-script-hack_GM431946152.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/coin-master-free-chest-link_GM406889139.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/mcmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/40-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/roblox-titanic-free-games_GM431946152.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/free-admin-roblox-codes_GM431946152.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/cool-roblox-skins-for-free_GM431946152.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/games-in-roblox-that-give-you-robux_GM431946152.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/roblox-rewards_GM431946152.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/coin-master-hack-lost-world-2021-com_GM406889139.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_off000031ca.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x31CA	22716 bytes
SHA-256: `a475d3fbb07534d45dc2e82eb5628972fffedf69b7fa6de09d4b5d3c70bea5c8`
`font_01_sfnt_off0000648d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x648D	18976 bytes
SHA-256: `6261d3ec81c6cbaf3638408525783229b77c4ad6b6ea6963ee3cdfcf54d9f304`

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