PDF malware analysis — malicious · 2cb156d5e2694f72

MALICIOUS

PDF

43.6 KB Created: 2021-06-07 12:40:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 696796904636191f987a232b902bafd8 SHA-1: c62f0d1615607806e5cb945a6066fa2d591f7386 SHA-256: 2cb156d5e2694f72d8ea80c46402be49405b056581ce2a13bb7ff4dc646bc535

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 0.9865

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.tw/app/835599320/how-to-get-free-followers-on-tiktok-game-hack PDF link annotation
- https://foc.vn/public/upload/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/coin-master-in-app-purchase-hack_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/get-free-robux-generator_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/roblox-land-free-robux_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/coin-master-free-spinv1-0apkpure-com-apk_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/coin-master-hack-safe_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
- https://foc.vn/public/upload/files/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/coin-master-hack-programers_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/free-tiktok-likes-no-survey_GM835599320.pdfIn PDF document text
- https://foc.vn/public/upload/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/minecraft-java-hacks_GM479516143.pdfIn PDF document text
- https://foc.vn/public/upload/files/free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/minecraft-free-android_GM479516143.pdfIn PDF document text
- https://foc.vn/public/upload/files/roblox-printables-free_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/moon-active_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/roblox-script-hack_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/minecraft-login-free_GM479516143.pdfIn PDF document text
- https://foc.vn/public/upload/files/optifine-mcpe_GM479516143.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_004_off00004c3b.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C3B	27128 bytes
SHA-256: `6b4812a2b775c681b2d62c862d6968e34ac2d7ac0053c28a199262d30544d8dd`
`font_01_sfnt_off000089bf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x89BF	17692 bytes
SHA-256: `c8a0034b4012066e27b368389264813a3515151838273d971ed31104f84b04bc`

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