PDF malware analysis — malicious · d1c2b1a6ba817c36

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 16:29:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 9d44e4ed44e8c7ee4c25f7c25fcc3d7f SHA-1: 1189753f15848ea73d3b364b9ecd551fafefbbfd SHA-256: d1c2b1a6ba817c36f18cc5f543baed0ec6d99e8bd36e509c7345400edbdd3786

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.tw/app/406889139/blogspot-coin-master-free-spins-game-hack PDF link annotation
- http://stomatoloska-ordinacija-rijeka.com/files/free-robux-today_GM431946152.pdfIn PDF document text
- http://stomatoloska-ordinacija-rijeka.com/files/hacks-for-texting-simulator-roblox_GM431946152.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/coin-master-free-cards-and-spin-link_GM406889139.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/coin-master-free-spins-and-coins-link-haktuts_GM406889139.pdfIn PDF document text
- http://stomatoloska-ordinacija-rijeka.com/files/buy-tiktok-likes-free_GM835599320.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
- http://stomatoloska-ordinacija-rijeka.com/files/roblox-lvl-7-script-executor-free-mac_GM431946152.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
- http://stomatoloska-ordinacija-rijeka.com/files/free-roblox-merch-from-games_GM431946152.pdfIn PDF document text
- http://stomatoloska-ordinacija-rijeka.com/files/coin-master-reward-link_GM406889139.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/hack-game-coin-master_GM406889139.pdfIn PDF document text
- http://stomatoloska-ordinacija-rijeka.com/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://stomatoloska-ordinacija-rijeka.com/files/download-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
- http://stomatoloska-ordinacija-rijeka.com/files/roblox-cheat-wall-glitch-hack_GM431946152.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
- http://stomatoloska-ordinacija-rijeka.com/files/free-diamonds-coin-master_GM406889139.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/minecraft-free_GM479516143.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_off00003135.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3135	22344 bytes
SHA-256: `ffb2aa2d7c019119f0a9e3f5f5e5e9810dacda2b32fd0dec625206fc0fa17d68`
`font_01_sfnt_off00006305.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6305	18464 bytes
SHA-256: `d4f4a4328566268ab963e7ab93eb9b97adb01760eea7805a91b582d18af7b90a`

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