PDF malware analysis — malicious · f9cd005f2b45da5f

MALICIOUS

PDF

35.7 KB Created: 2021-07-08 00:39:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07

MD5: c1da495ccbdcd0d90b6fcb72ed427298 SHA-1: ee4020bfc72b5cb262f2d45574ce88b7eac803dc SHA-256: f9cd005f2b45da5fe163890c4664aeeb05396fe9d983ddd16e33e5ed635d44bd

182 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous links to external websites, many of which are disguised as game hacks or generators for in-game currency like 'Robux'. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' indicates the document likely instructs the user to copy and paste content into a command-line interface, suggesting an attempt to execute malicious commands. The presence of multiple external links and the lure of free in-game items strongly suggest a phishing or scam campaign designed to trick users into visiting malicious sites or executing harmful code.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 6

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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.
Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE

Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
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 http://netcdn.tw/app/431946152/free-robux-without-survey-game-hack PDF link annotation
- https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/how-to-hack-robux-with-cheat-engine-2021_GM431946152.pdfIn PDF document text
- https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-spin-and-win-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/roblox-sign-in-free-robux_GM431946152.pdfIn PDF document text
- https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
- https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
- https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/descargar-hack-deathrun-roblox_GM431946152.pdfIn PDF document text
- https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
- https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-spin-coin-master-apk_GM406889139.pdfIn PDF document text
- https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
- https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/coin-master-hack-ios-no-jailbreak_GM406889139.pdfIn PDF document text
- https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/super-nice-mml-hack-roblox_GM431946152.pdfIn PDF document text
- https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
- https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
- https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/i-got-hacked-in-weird-writing-roblox_GM431946152.pdfIn PDF document text
- https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
- https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/roblox-spin-head-hack_GM431946152.pdfIn PDF document text
- https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/hacks-para-tener-robux-gratis-2021_GM431946152.pdfIn PDF document text
- https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/easy-how-to-get-free-robux_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
`font_00_sfnt_off000032e2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x32E2	22460 bytes
SHA-256: `c9e8108dc41a1e25a884b2ae559bf9f3b2864bcbdee70a06ffe2752c4fa4dfa9`
`font_01_sfnt_off000064d8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64D8	19600 bytes
SHA-256: `ea618dc0ac89057573f0900fc77451ab5142be89e827617cc4892c329dfdb229`

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