PDF malware analysis — malicious · bfbebe4daceba22b

MALICIOUS

PDF

34.6 KB Created: 2021-07-09 13:24:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 7c81b58d82021616bf6c58032cac1167 SHA-1: 34243829689d53f0d27f6816b8b96a081d47e2be SHA-256: bfbebe4daceba22b4f1eee7b75ee0574e595abd7e98482c0b2bfbef84ca0e85b

62 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded URLs and a primary external URI pointing to a download for a game hack. The ML classifier strongly flagged this PDF as malicious, and the presence of download lures and callback phishing indicators further supports a malicious intent. The document likely serves as a lure to download a second-stage payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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/freespinandcoin-game-hack
- https://razredna-nastava.net/files/apps-to-get-free-robux_GM431946152.pdf
- http://razredna-nastava.net/files/lazyblocks-com-free-robux_GM431946152.pdf
- https://razredna-nastava.net/files/tiktok-free-play-online_GM835599320.pdf
- http://razredna-nastava.net/files/descargar-coin-master-hackeado_GM406889139.pdf
- http://razredna-nastava.net/files/how-do-i-get-minecraft-for-free_GM479516143.pdf
- http://razredna-nastava.net/files/roblox-hacks-com_GM431946152.pdf
- http://razredna-nastava.net/files/minecraft-building-hacks_GM479516143.pdf
- http://razredna-nastava.net/files/free-ways-to-get-robux_GM431946152.pdf
- http://razredna-nastava.net/files/all-free-stuff-in-roblox_GM431946152.pdf
- http://razredna-nastava.net/files/coin-master-spins_GM406889139.pdf
- https://razredna-nastava.net/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
- http://razredna-nastava.net/files/coin-master-free-coins-links-2021_GM406889139.pdf
- http://razredna-nastava.net/files/top-5-ways-to-get-free-robux_GM431946152.pdf
- http://razredna-nastava.net/files/roblox-champion-t-shirt-and-bag-free_GM431946152.pdf
- https://razredna-nastava.net/files/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdf
- http://razredna-nastava.net/files/pokemon-go-free-64-bit_GM1094591345.pdf
- https://razredna-nastava.net/files/unlimited-coin-master-free-spins_GM406889139.pdf
- http://razredna-nastava.net/files/how-to-earn-free-robux-2021_GM431946152.pdf
- https://razredna-nastava.net/files/minecraft-java-for-free_GM479516143.pdf
- https://razredna-nastava.net/files/robux-page_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_002_off00003243.bin` `6a31f55e415fdd53fa7ff3cf9aaac816fe62a01f7f4f5f15b53ef5c687d70cbe`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3243	22552 bytes
`font_01_sfnt_off000064aa.bin` `19494bed36003fadbe02431e250c62ef1698fa422030438aed600d934fd3a9e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64AA	18244 bytes

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