PDF malware analysis — malicious · 4fe6f5efc62039af

MALICIOUS

PDF

45.3 KB Created: 2021-05-14 18:33:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 524ef5d330c4a8686b66e807fa4ba803 SHA-1: 104c183a369c7fb35cfc068dabadce9ce762177c SHA-256: 4fe6f5efc62039af552b2546f5b9c1a1b4b1eb021f58d063e0692fc1aa97e66a

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 0.9507

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/can-you-get-free-robux-on-roblox-game-hack PDF link annotation
- http://charivne.info/ckfinder/userfiles/files/coin-master-daily-free-spins-link-today-blog_GM406889139.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/how-to-hack-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/coin-master-raid-hack_GM406889139.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/coin-master-hack-mobile_GM406889139.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/make-your-own-minecraft-server-free_GM479516143.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/windows-10-minecraft-free-with-java_GM479516143.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/how-to-get-free-clothing-on-roblox_GM431946152.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/free-coins-spins-on-coin-master_GM406889139.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/free-minecraft-hosting_GM479516143.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/get-more-robux_GM431946152.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/coin-master-game-free-spin_GM406889139.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/blox-supply-free-robux_GM431946152.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/coin-master-daily-bonus-hack_GM406889139.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
`stream_003_off00004ae9.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4AE9	24796 bytes
SHA-256: `23316e4f220a6ab20a3304bf28d0d70c3c9409405a1745406fb000d18dc0d2fa`
`font_01_sfnt_off000083b4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x83B4	2880 bytes
SHA-256: `10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132`
`font_02_sfnt_off00008d9f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D9F	18580 bytes
SHA-256: `0d0c29456045ba8700eeeb9b5d08ef238a74b3c73615dbb1a220be23830403a6`

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