PDF malware analysis — malicious · 0dc94836ba9a2f43

MALICIOUS

PDF

34.8 KB Created: 2021-06-23 02:48:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07

MD5: bf7cadf88b03d2c1d589375b0cbe41b0 SHA-1: 0a93f62b95b6d818543f2e3419e2713c52b38227 SHA-256: 0dc94836ba9a2f433effddfa862d992c25a52a6593d842917f578b2c6ca5a01d

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' redirector, specifically http://netcdn.co/app/431946152/free-admin-commands-roblox-jailbreak-game-hack. The document body also contains this URL and other similar lures for game-related cheats and items. This suggests a social engineering attack aimed at tricking users into visiting a potentially malicious site. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

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-admin-commands-roblox-jailbreak-game-hack PDF link annotation
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/roblox-free-items-website_GM431946152.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/minecraft-the-complete-handbook-collection_GM479516143.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/free-download-coin-master_GM406889139.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/minecraft-hacker-mask_GM479516143.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/free-robux-ad_GM431946152.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/xray-hack_GM479516143.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/cheat-roblox-2021-bee-swarm-simulator_GM431946152.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/free-spins-coin-master-without-survey_GM406889139.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/how-to-hack-an-roblox-account-2021-november_GM431946152.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/free-links-coin-master_GM406889139.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/coin-master-free-gold-cards-link-2021_GM406889139.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/pubg-uc-shop-pakistan_GM1330123889.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/como-hackear-a-jugadores-de-roblox_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_off00002ed7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2ED7	22712 bytes
SHA-256: `f2490949847f18f4fcf2c72940556900c40ad344be7769cc804deec47f2d3c9f`
`font_01_sfnt_off0000619c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x619C	19540 bytes
SHA-256: `bc7a6d1c5508404f25132c32be414b5cbea705239153933516646405a685a69d`

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