PDF malware analysis — malicious · c9aab45c1686196b

MALICIOUS

PDF

46.4 KB Created: 2021-05-17 22:31:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 200d8d4afc213351861a96ae172dd83c SHA-1: 9e0965a16cf821001e817e2a95ffddeb67c4bfb8 SHA-256: c9aab45c1686196b659b7643cf0db8a13fbe9e7e2896780b1da71edb28b6db88

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 0.8948

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/406889139/coin-master-app-hacks-game-hack PDF link annotation
- https://www.contabilidadesomma.com.br/images/free-coin-master-spins_GM406889139.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/reddit-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/robloxhacks_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/roblox-hack-apk_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/coin-master-unlimited-spins_GM406889139.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/minecraft-switch-free_GM479516143.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/roblox-login-hack_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/free-free-robux_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/best-tricks-co-robux_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/robuxglobalcom_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/free-robux-real-2021_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/free-game-pack-with-google-play-coin-master_GM406889139.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/coin-master-free-spin-link-list_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_off00004774.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4774	30596 bytes
SHA-256: `e59b4007f5da7833bc8e96819400e763e0077de074c8605b7652a6832e26a574`
`font_01_sfnt_off0000868c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x868C	4020 bytes
SHA-256: `dbaa9c12d07f3632734605f1d5d6dee3ad5af1f57488e46d95dab68b383f08c5`
`font_02_sfnt_off00009413.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9413	17892 bytes
SHA-256: `38569bedbe5996f2827c101678e23308efeb8581fe2a57cd3cb5ddc3bbed0d22`

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