PDF malware analysis — malicious · 361cfcefbf893d51

MALICIOUS

PDF

49.7 KB Created: 2021-05-12 23:09:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 4ada583b33d29aae87ed51c67158cd85 SHA-1: 52dc3ca096d9528feeebf0e727437ff4ec769d69 SHA-256: 361cfcefbf893d5153008e5a12c744d58f2740e2bddf4d12bb2f5af61930aaea

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 0.9349

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/earn-robux-today-earn-robux-today-game-hack PDF link annotation
- https://vierabyragazze.com/upload/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/robux-come_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/coin-master-hacks-for-gold-cards_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/coin-master-fan-hack_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/roblox-hack-codes_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/earnrobux_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/how-to-get-free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/roblox-character-free_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/coin-master-freebies-2021_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/minecraft-hack-download_GM479516143.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/hack-download_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/free-robux-card-codes_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/get-coin-master-free-spin_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/roblox-imagine_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/free-robux-no-scam_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
`stream_003_off00004913.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4913	25916 bytes
SHA-256: `418d6b0cd25e9b2e52f05bca125b972b8588ff08ebf99b1011000a843b0bcfad`
`font_01_sfnt_off00008456.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8456	8184 bytes
SHA-256: `5267349969336ffb76dd86a8b8b8900374687728d925be5be1ea414fa0de7d23`
`font_02_sfnt_off00009f74.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9F74	18432 bytes
SHA-256: `50fc1adeb895ae30588f73a493889120d8bf728fc3821c38df9289c33b75de2a`

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