PDF malware analysis — malicious · ef891609560baf3b

MALICIOUS

PDF

41.7 KB Created: 2021-05-14 03:26:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 0287e3b6415a0564c028f01d83a2f219 SHA-1: c5529bcfc10ed041fef3df2d2829b09f6a4cd0e1 SHA-256: ef891609560baf3b251912ac6e2c7f03a545809093ed6d7651541dd32cb7d9e7

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 0.9971

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.xyz/app/406889139/apk-coin-master-hack-game-hack PDF link annotation
- https://zabota-kashira.ru/images/get-free-robux-now_GM431946152.pdfIn PDF document text
- https://zabota-kashira.ru/images/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
- https://zabota-kashira.ru/images/minecraft-xbox-one-code-free_GM479516143.pdfIn PDF document text
- https://zabota-kashira.ru/images/ro-ghoul-script_GM431946152.pdfIn PDF document text
- https://zabota-kashira.ru/images/coin-master-hack-spins-android_GM406889139.pdfIn PDF document text
- https://zabota-kashira.ru/images/easy-robux-today_GM431946152.pdfIn PDF document text
- https://zabota-kashira.ru/images/minecraft-free-install_GM479516143.pdfIn PDF document text
- https://zabota-kashira.ru/images/free-robux-2021_GM431946152.pdfIn PDF document text
- https://zabota-kashira.ru/images/cm-spin-link_GM406889139.pdfIn PDF document text
- https://zabota-kashira.ru/images/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
- https://zabota-kashira.ru/images/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
- https://zabota-kashira.ru/images/hack-crack-for-coin-master-currency_GM406889139.pdfIn PDF document text
- https://zabota-kashira.ru/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
- https://zabota-kashira.ru/images/robux-free-gift-card_GM431946152.pdfIn PDF document text
- https://zabota-kashira.ru/images/toolbox-for-mcpe_GM479516143.pdfIn PDF document text
- https://zabota-kashira.ru/images/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
- https://zabota-kashira.ru/images/coin-master-spin-hack_GM406889139.pdfIn PDF document text
- https://zabota-kashira.ru/images/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
- https://zabota-kashira.ru/images/free-coin-master-coins_GM406889139.pdfIn PDF document text
- https://zabota-kashira.ru/images/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
- https://coinmasterspinandcoin.comIn 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_003_off00004939.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4939	24692 bytes
SHA-256: `f56634802123f1e3cc62d6f90c18b11cd4921e6f58d7b5a47a601d992bfc9b87`
`font_01_sfnt_off000081d7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x81D7	17892 bytes
SHA-256: `10848dcb94fa8ef52647dff51f313a82fe0a75c442c4a6ae41e72789ca7f1d9e`

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