PDF malware analysis — malicious · 31d090494d9084bf

MALICIOUS

PDF

32.8 KB Created: 2021-06-21 23:58:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 9fbda80387fd2db0c1b5f4394cdc1394 SHA-1: 85953de95318a98ffa488ecd1aae29afaafe2760 SHA-256: 31d090494d9084bf5913fda41442d47803b8e40b401b5ae1f6ab93e67e65d47a

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lure users with promises of game hacks and free items, such as for Roblox and Coin Master. The primary URL, http://netcdn.co/app/431946152/free-vip-server-for-roblox-labyrinth-game-hack, is identified as a redirector for a game hack. This suggests the document's purpose is to drive traffic to malicious websites, likely for phishing or malware distribution. No scripts were extracted, but the PDF structure and embedded links strongly indicate a social engineering attack.

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-vip-server-for-roblox-labyrinth-game-hack PDF link annotation
- http://safetin.ru/images/robux-com-free_GM431946152.pdfIn PDF document text
- http://safetin.ru/images/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
- http://safetin.ru/images/coin-master-free-spins-link-october-2021_GM406889139.pdfIn PDF document text
- http://safetin.ru/images/free-robux-giveaway-website_GM431946152.pdfIn PDF document text
- http://safetin.ru/images/clean-master-hack-coins_GM406889139.pdfIn PDF document text
- http://safetin.ru/images/dbaf-hacked-roblox_GM431946152.pdfIn PDF document text
- http://safetin.ru/images/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
- http://safetin.ru/images/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
- http://safetin.ru/images/minecraft-handbook_GM479516143.pdfIn PDF document text
- http://safetin.ru/images/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
- http://safetin.ru/images/hacks-for-pet-ranch-roblox_GM431946152.pdfIn PDF document text
- http://safetin.ru/images/free-cookie-stealer-roblox_GM431946152.pdfIn PDF document text
- http://safetin.ru/images/how-to-hack-through-walls-on-roblox_GM431946152.pdfIn PDF document text
- http://safetin.ru/images/cruise-ship-tycoon-cheats-roblox_GM431946152.pdfIn PDF document text
- http://safetin.ru/images/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
- http://safetin.ru/images/tiktok-follower-bot-free_GM835599320.pdfIn PDF document text
- http://safetin.ru/images/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
- http://safetin.ru/images/coin-master-free-spins-and-coins-for-iphone_GM406889139.pdfIn PDF document text
- http://safetin.ru/images/robux-hack-2021-creado-por-hackdejuegosapk-roblox-tm_GM431946152.pdfIn PDF document text
- http://safetin.ru/images/free-spin-hack-coin-master-2021_GM406889139.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_off00002bed.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2BED	20932 bytes
SHA-256: `28575c83d6849bd535190f4ff53e54e9894e5ba73794376657ad1994edfafd3d`
`font_01_sfnt_off00005965.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5965	19644 bytes
SHA-256: `0c319c50406ad2dde693364d8ecacd88207dc6c4f08173234952d82c9674ab89`

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