PDF malware analysis — malicious · 02d1b7d26675ca15

MALICIOUS

PDF

45.2 KB Created: 2021-05-11 14:01:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 7dc4053c1cd55e1b2219f29a53367d7a SHA-1: e91145329a5b05cd94cf85c33ab6f224491f72ed SHA-256: 02d1b7d26675ca1584f6dbc39f26546757d1cd9f49fb57e85b6ef2acbc50477b

182 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a 'game hack' lure, presenting a fake CAPTCHA or human verification prompt to trick users into clicking numerous external links. The document contains a large number of links, many of which point to other PDFs hosted on similar subdomains, suggesting a link farm or SEO manipulation tactic. The primary malicious URL identified is https://netcdn.xyz/app/431946152/how-to-hack-peoples-roblox-accounts-game-hack, which is likely a redirector to a malicious site.

Machine Learning

Nyx PDF Classifier malicious score 0.9551

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.
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-hack-peoples-roblox-accounts-game-hack PDF link annotation
- http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
- http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
- http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/free-roblox-com_GM431946152.pdfIn PDF document text
- http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
- http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/windows-10-minecraft-free-with-java_GM479516143.pdfIn PDF document text
- http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/coin-master-hack-app-ios-download_GM406889139.pdfIn PDF document text
- http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/freespincoin-masterlinkdownload_GM406889139.pdfIn PDF document text
- http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
- http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/coin-master-daily-rewards-link_GM406889139.pdfIn PDF document text
- http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/unlimited-robux_GM431946152.pdfIn PDF document text
- http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
- http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
- http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
- http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
- http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-in-pc_GM406889139.pdfIn PDF document text
- http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
- http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/coin-master-free-spins-2021-app_GM406889139.pdfIn PDF document text
- http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
- http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/coin-master-gold-cards-free-link_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_off00004b36.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4B36	24332 bytes
SHA-256: `cecaf4b2eaf3ef695fd0816aa337bb856d4c07dcae80f2546cf2e07fb2c1e86a`
`font_01_sfnt_off0000827e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x827E	2820 bytes
SHA-256: `96a70491b0783ad8c6fc9b11a18f021aa22c69ac41ee4499b781d16a1b99b689`
`font_02_sfnt_off00008c1f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8C1F	18920 bytes
SHA-256: `cd7407ef9aef6c4c50b1fdf01e763fd2e22944ade267215dee183f168e7b87f5`

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