PDF malware analysis — malicious · 33e09009eae7f244

MALICIOUS

PDF

50.1 KB Created: 2021-06-09 16:43:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 8f1cd3bd1b3c1f30ca5d93bcd97c88d4 SHA-1: 213d605f8d5bd18ceaf3f7832316877c2ef77712 SHA-256: 33e09009eae7f244b1db9dd665e8ca90f4d70d4c05c78f8630f798047dd99b82

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 0.9789

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.tw/app/431946152/how-to-get-free-robux-with-inspect-element-2021-game-hack PDF link annotation
- https://www.devries-group.de/images/coin-master-400-spin-link-hack_GM406889139.pdfIn PDF document text
- https://www.devries-group.de/images/pubg-uc-rate_GM1330123889.pdfIn PDF document text
- https://www.devries-group.de/images/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
- https://www.devries-group.de/images/growboxnet-free-robux_GM431946152.pdfIn PDF document text
- https://www.devries-group.de/images/hack-card-collection-coin-master_GM406889139.pdfIn PDF document text
- https://www.devries-group.de/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
- https://www.devries-group.de/images/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
- https://www.devries-group.de/images/robux-free-hack-no-human-verification-2021-windows-10_GM431946152.pdfIn PDF document text
- https://www.devries-group.de/images/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
- https://www.devries-group.de/images/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.devries-group.de/images/free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.devries-group.de/images/coin-master-free-link-facebook_GM406889139.pdfIn PDF document text
- https://www.devries-group.de/images/best-hacked-client_GM479516143.pdfIn PDF document text
- https://www.devries-group.de/images/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
- https://www.devries-group.de/images/coin-master-free-spin-no-offers_GM406889139.pdfIn PDF document text
- https://www.devries-group.de/images/coin-master-free-spins-link-whatsapp-group_GM406889139.pdfIn PDF document text
- https://www.devries-group.de/images/what-app-do-you-use-to-get-robux-for-free_GM431946152.pdfIn PDF document text
- https://www.devries-group.de/images/free-robux-no-offers_GM431946152.pdfIn PDF document text
- https://www.devries-group.de/images/best-way-to-get-robux_GM431946152.pdfIn PDF document text
- https://www.devries-group.de/images/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000053c6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x53C6	24472 bytes
SHA-256: `cc87e8c55d79cb9115d8a6a2dcfd360073b7ac60c811b8e8bf93b4c89daacb6e`
`font_01_sfnt_off00008bbf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8BBF	7272 bytes
SHA-256: `f462303657ce1de10d3e7d5ae1fe17c8584116bd5bc216971166de87266da924`
`font_02_sfnt_off00009d30.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9D30	19680 bytes
SHA-256: `bc2dbac8efc5a8514fea072338410436de761ad3c4e2df826870a62178a4430d`

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