PDF malware analysis — malicious · 92e576dc42bf7ee9

MALICIOUS

PDF

35.3 KB Created: 2021-07-10 00:44:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 8c16b8d93b1111ac887ce7b6eecffadd SHA-1: d2b75d4092cede144b771efa3f5e4337428e8802 SHA-256: 92e576dc42bf7ee94fbe2b3850f2a9a21b038ff6a595fc9be3436366da74f5e9

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 0.9980

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/479516143/free-minecraft-severs-game-hack PDF link annotation
- http://www.biochemix.com/uploaded_files/userfiles/files/denis-daily-roblox-free-robux_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/free-girl-stuff-roblox_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/free-robux-in-5-seconds_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/roblox-free-executor_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/minecraft-free-android_GM479516143.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/coin-master-hack-apk_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/break-free-song-id-roblox_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/androeed-ru-minecraft_GM479516143.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/how-are-people-hacking-roblox-jailbreak_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/coin-master-daily-free-coins-link-today_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/nnuevo-hack-de-robux-20210_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/free-coin-spin-daily-link-for-coin-master-game_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
`font_00_sfnt_off000035cd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x35CD	22776 bytes
SHA-256: `1cda385eb830580cdf39158b0f83677eec0126d92b84c3e6e635f91f6af61771`
`font_01_sfnt_off0000688d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x688D	17968 bytes
SHA-256: `48bc55e03208a8f2bb08e2877cb4566e36c68f2d0f6b3425dea205355258b605`

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