PDF malware analysis — malicious · efd402de0d331320

MALICIOUS

PDF

42.6 KB Created: 2021-05-11 01:39:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04

MD5: af189e47f3db15bd00a5bc65e9c9de64 SHA-1: 8b45e6844ad6b18e70bb240c8399b76f1bbbddf7 SHA-256: efd402de0d3313206b0e36a873d90179470b76bf71edb8c42f7a18a5bdddbd54

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/431946152/how-to-buy-robux-for-free-game-hack PDF link annotation
- http://neltalen.nl/images/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
- http://neltalen.nl/images/coin-master-pc-hack_GM406889139.pdfIn PDF document text
- http://neltalen.nl/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
- http://neltalen.nl/images/coin-master-apk-hack-2021_GM406889139.pdfIn PDF document text
- http://neltalen.nl/images/how-to-make-free-robux_GM431946152.pdfIn PDF document text
- http://neltalen.nl/images/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
- http://neltalen.nl/images/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
- http://neltalen.nl/images/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
- http://neltalen.nl/images/coin-master-free-spinv1-0apkpure-com-apk_GM406889139.pdfIn PDF document text
- http://neltalen.nl/images/free-spins-coin-master-2021-no-verification_GM406889139.pdfIn PDF document text
- http://neltalen.nl/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
- http://neltalen.nl/images/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
- http://neltalen.nl/images/unlimited-coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://neltalen.nl/images/coin-master-game-hacking_GM406889139.pdfIn PDF document text
- http://neltalen.nl/images/roblox-script-hack_GM431946152.pdfIn PDF document text
- http://neltalen.nl/images/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
- http://neltalen.nl/images/minecraft-windows-10-edition-free-with-java_GM479516143.pdfIn PDF document text
- http://neltalen.nl/images/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
- http://neltalen.nl/images/village-coin_GM406889139.pdfIn PDF document text
- http://neltalen.nl/images/coin-master-3rd-village-free-2021-gift-card_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_003_off00004774.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4774	26772 bytes
SHA-256: `d935edc45f6ee3538622fa65ae7c66fb099847f50a21c6d7dc4f0d9f3d387caa`
`font_01_sfnt_off00008415.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8415	18356 bytes
SHA-256: `42cf6025b0828d48dcef6abba26d08473f6f67d2383591dd07323470bab2f866`

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