PDF malware analysis — malicious · d937b6d37414e80f

MALICIOUS

PDF

43.1 KB Created: 2021-06-03 19:58:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: bf9783f2503909e5b3d3ffae04ee5c6b SHA-1: 2c516abd58719e288bc454e542a1e55614d92c4a SHA-256: d937b6d37414e80fb98e59b1fc0fe86f321348cbc49e0d54e6d9e36638aabcb8

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9865

Heuristics 4

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.
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.online/app/406889139/coin-master-daily-free-spins-2021-game-hack PDF link annotation
- http://www.rewaqousha.net/userfiles/files/minecraft-thumbnail-maker-free_GM479516143.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/how-to-watch-ads-for-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/coin-master-cheats-free-spins_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/daily-free-spins_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/minecraft-free-version_GM479516143.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/moonactive-coin-master-hack_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/how-can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/minecraft-pocket-edition-free-ios_GM479516143.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/free-robux-android_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
`stream_004_off00004d83.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4D83	24056 bytes
SHA-256: `d49862b80f2484ba8352b3d1dd0fc3ec6fdfe649cc59c1cd1cf20bc9f8f89a43`
`font_01_sfnt_off0000848b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x848B	18708 bytes
SHA-256: `0e09573a858265cfc65c534eb28458a66078312e2bd7bae94317e03ea41fcd19`

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