PDF malware analysis — malicious · 1f3ea2662c8dcbc3

MALICIOUS

PDF

35.1 KB Created: 2021-07-03 18:17:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: cbc84e06bd48b4bf2fee4ce0aa61cf83 SHA-1: d5e9682965aee7fadef640a5a70daf06cc8ebd98 SHA-256: 1f3ea2662c8dcbc3feb467f66b2c42ee74ecd536a4adef0d521a82172f48c329

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9980

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 http://netcdn.tw/app/406889139/coin-master-hack-no-human-verification-game-hack PDF link annotation
- https://www.bumbar-sport.hr/files/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/cheat-roblox-pour-counter-blox_GM431946152.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/javascript-free-robux_GM431946152.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/free-gold-cards-coin-master_GM406889139.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/free-card-robux_GM431946152.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/games-like-coin-master_GM406889139.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/free-robux-websites-no-password_GM431946152.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/how-to-download-roblox-on-ps4-for-free_GM431946152.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/roblox-generator_GM431946152.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/roblox-tix-hack-cheat-engine_GM431946152.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/roblox-studio-free-download-10_GM431946152.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/obby-free-robux-elevanoz_GM431946152.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/how-to-make-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/how-to-coin-master-hack_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_off0000318c.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x318C	23148 bytes
SHA-256: `8c7eae8dd00d73064bbb4c4aec5a4da667226f1b5911811eeeff79588637e9b4`
`font_01_sfnt_off000065ad.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65AD	18540 bytes
SHA-256: `be7925905a3cbe2c3ec6c08efd648bb1fac1fd605dc94fa0f28581d8b5cb9fcb`

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