PDF malware analysis — malicious · 070c62ed07b9db0c

MALICIOUS

PDF

44.2 KB Created: 2021-05-12 09:56:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 0e86aaca0a4a580f29ba30672dbdff5e SHA-1: 1225fdd975225e6651f0683b3e8137a38e710b9a SHA-256: 070c62ed07b9db0c3732f9f6511ac035d4a78cee4ee95fa33b856447a7e5c9d0

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 0.9976

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-mod-apk-unlimited-spin-download-free-full-version-game-hack PDF link annotation
- https://corbo.ru/images/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://corbo.ru/images/earn-robux_GM431946152.pdfIn PDF document text
- https://corbo.ru/images/cm-free-spin-link-today_GM406889139.pdfIn PDF document text
- https://corbo.ru/images/free-robux-today_GM431946152.pdfIn PDF document text
- https://corbo.ru/images/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
- https://corbo.ru/images/working-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://corbo.ru/images/coin-master-ids-for-free-spins_GM406889139.pdfIn PDF document text
- https://corbo.ru/images/free-gold-cards-coin-master_GM406889139.pdfIn PDF document text
- https://corbo.ru/images/hack-coin-master-download_GM406889139.pdfIn PDF document text
- https://corbo.ru/images/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
- https://corbo.ru/images/get-free-robux-info_GM431946152.pdfIn PDF document text
- https://corbo.ru/images/wurst-112-2_GM479516143.pdfIn PDF document text
- https://corbo.ru/images/free-spins-for-coin-master-2021_GM406889139.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/where-to-get-robux_GM431946152.pdfIn PDF document text
- https://corbo.ru/images/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
- https://corbo.ru/images/how-to-get-free-robux-2021-easy_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-generator-no-verification_GM431946152.pdfIn PDF document text
- https://corbo.ru/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004a96.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A96	26552 bytes
SHA-256: `289bd6ea9506397231128cca0963b8cfc637c26f7db9c813325f6c646bc39419`
`font_01_sfnt_off00008741.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8741	19356 bytes
SHA-256: `92ce47a29f6b22b41a3f27f468cf2ba8cb02212e9ac17cc8e0fda8e64716967c`

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