PDF malware analysis — malicious · 2644682dd481b76c

MALICIOUS

PDF

34.8 KB Created: 2021-06-20 07:38:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 248339850d52fda04f1a34538b7d7f5e SHA-1: c1148b93302a225cf42a26138ffa1388074ef254 SHA-256: 2644682dd481b76c6c893cab2e282b1e967040ccf531f295ed82f3db28f98ccb

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 0.9980

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 http://netcdn.co/app/431946152/free-rebirth-codes-for-pet-simulator-2-on-roblox-game-hack PDF link annotation
- https://knowledgekingdom.com.jo/aidata/blanc/files/free-robux-2021_GM431946152.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/coin-master-hack-ios-12_GM406889139.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/cheat-engine-roblox-trainer_GM431946152.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/roblox-hack-client_GM431946152.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/free-robux-games_GM431946152.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/coin-master-online-hack-no-survey-no-password_GM406889139.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/what-day-does-john-doe-hack-roblox_GM431946152.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/coin-master-free-spins-today-new_GM406889139.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/real-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/tiktok-likes-for-free_GM835599320.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/free-robux-just-put-in-your-password_GM431946152.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/coin-master-daily-spins-and-coins_GM406889139.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/coin-master-hack-apk-link_GM406889139.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/free-robux-generator-no-surveys-2021_GM431946152.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/coin-master-hack-apk-download-latest-version_GM406889139.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/coinmaster-gps-user-review-coinmaster-coin-master-hack-pagedemo-index_GM406889139.pdfIn PDF document text
- https://knowledgekingdom.com.jo/aidata/blanc/files/t-shirt-for-roblox-free-shipping_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_off000030ae.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x30AE	21808 bytes
SHA-256: `fa5e343983b13c619abeb56b9bde95fe34fae813cf777ec84e87709055091547`
`font_01_sfnt_off000060af.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60AF	19892 bytes
SHA-256: `fd63d271f6c1519aceea3a10503b969453218b1ff49b18ecb5550b9f424c6e9f`

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