PDF malware analysis — malicious · adf2c034bddf3141

MALICIOUS

PDF

46.0 KB Created: 2021-06-03 15:19:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 472b7a49f0e92c766dc9c8fdd72bcd8e SHA-1: a98f7bab0b9ba69656ed8fc22442899531e437ac SHA-256: adf2c034bddf31418c5a84424a44a63a7640fa8446e628631bf8996e8c446552

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 0.9797

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.online/app/406889139/how-to-o-get-free-coin-master-spins-game-hack PDF link annotation
- https://www.jcn.co.uk/uploads/files/files/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-spins-coin-master-2021-glitch_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-robux-scam_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/download-hack-coin-master-apk_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/install-coin-master_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-robux-real-working_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-get-free-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-fan-page-giveaway_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/robux-generator-without-verification_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-and-spin-link_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-money-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_004_off00005110.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5110	24652 bytes
SHA-256: `0c92f1ba9f455eb4e98d5bc9af092cf3ca582d146684765d2caf92cfad1c8e6c`
`font_01_sfnt_off000087b7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x87B7	2896 bytes
SHA-256: `c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd`
`font_02_sfnt_off0000919d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x919D	18052 bytes
SHA-256: `1a49309645179e5aa03d30e235780e1615dc0ec238564b82d4d907f08b29e71b`

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