PDF malware analysis — malicious · 5d8f319465d7ae1d

MALICIOUS

PDF

50.5 KB Created: 2021-05-15 00:02:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: f32ec1f48bd2526a6faa09f5ecbb2072 SHA-1: 7b671b96bfb165a8b2a9159e96d9c0b57abfe468 SHA-256: 5d8f319465d7ae1d127135a0aedaa4652e11cca8573ca23c29e44f46bb6f9d1c

122 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains multiple links designed to lure users into clicking on "free Robux generator" or game hack websites. The presence of a fake CAPTCHA heuristic indicates an attempt to trick the user into performing an action, likely to download or execute further malicious content. The document's primary purpose appears to be social engineering through a fake generator lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9349

Heuristics 5

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.
Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA

Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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/431946152/how-to-get-free-robux-no-human-verification-2021-game-hack PDF link annotation
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/free-roblox-hack_GM431946152.pdfIn PDF document text
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/free-spin-coin-master-link-today_GM406889139.pdfIn PDF document text
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/roblox-catalog-free_GM431946152.pdfIn PDF document text
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/freespincoin-masterlinkdownload_GM406889139.pdfIn PDF document text
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/coin-master-cheats-and-hacks_GM406889139.pdfIn PDF document text
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/free-money-and-spins-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/coin-master-game-hacking-tricks_GM406889139.pdfIn PDF document text
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/cm-spins_GM406889139.pdfIn PDF document text
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/coin-master-hack-spin-link_GM406889139.pdfIn PDF document text
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/hack-version-of-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/public-enemy-sun-prairie-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/rewardrobux-com_GM431946152.pdfIn PDF document text
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/coin-master-apk-hack-32_GM406889139.pdfIn PDF document text
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/coin-master-hack-online-android_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
`font_00_sfnt_off00004a55.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4A55	31852 bytes
SHA-256: `cb1eb80929c0a740474ebe28ea063e310eab658541c0101a4d4075093964eeb3`
`font_01_sfnt_off00009579.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9579	2956 bytes
SHA-256: `bab8933fc39dc331bc4c1c904a82b1432ab2e02478fa0a59453c98c5c231da8d`
`font_02_sfnt_off00009f99.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9F99	19428 bytes
SHA-256: `dc7c459a90b1a398d2ee51f52972ed8a07904c77cd045887558a99bdb9823e3c`

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