PDF malware analysis — malicious · 8fe484960452bdee

MALICIOUS

PDF

45.0 KB Created: 2021-05-11 22:08:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: c4e0df84a2fb09936e50932cfcad9e3c SHA-1: 572691ee11fe259da2be06d16630aba2d6ddc0b0 SHA-256: 8fe484960452bdee2e10e296faef3efcd09de5093334d75580f96e696847782c

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a game hack lure to entice users to click on a malicious URL. The heuristic firings indicate a clear redirection to a site offering 'free generator / game hack' content. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a potential for further malicious activity upon user interaction, such as downloading additional payloads or redirecting to phishing sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9632

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-ids-for-free-spins-game-hack PDF link annotation
- https://corbo.ru/images/coin-master-jackpot-hack_GM406889139.pdfIn PDF document text
- https://corbo.ru/images/cm-free-spins_GM406889139.pdfIn PDF document text
- https://corbo.ru/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
- https://corbo.ru/images/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
- https://corbo.ru/images/how-to-hack-in-arsenal_GM431946152.pdfIn PDF document text
- https://corbo.ru/images/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
- https://corbo.ru/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
- https://corbo.ru/images/free-robux-wheel_GM431946152.pdfIn PDF document text
- https://corbo.ru/images/easy-robux_GM431946152.pdfIn PDF document text
- https://corbo.ru/images/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
- https://corbo.ru/images/free-robux-download_GM431946152.pdfIn PDF document text
- https://corbo.ru/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://corbo.ru/images/free-spins-promo-code-for-coin-master_GM406889139.pdfIn PDF document text
- https://corbo.ru/images/roblox-free-robux-website_GM431946152.pdfIn PDF document text
- https://corbo.ru/images/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
- https://corbo.ru/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
- https://corbo.ru/images/free-roebucks_GM431946152.pdfIn PDF document text
- https://corbo.ru/images/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://corbo.ru/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- https://corbo.ru/images/free-minecraft-texture-packs_GM479516143.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_off00004a4c.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A4C	24400 bytes
SHA-256: `189e588775f97b5e4456fb7795565d68390bd382a022bc044b43986cd044e2fe`
`font_01_sfnt_off000081f7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x81F7	3380 bytes
SHA-256: `1dd933c112880b232546f3aab6a17784a8f412d39fd551cc6eb31c5a04c3ce57`
`font_02_sfnt_off00008de0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8DE0	18060 bytes
SHA-256: `bab858729e8ad8a1f7527f4fc9e2aba9b42cc871b24e33d45117793d853149cd`

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