PDF malware analysis — malicious · b1bc60823955b1d2

MALICIOUS

PDF

41.8 KB Created: 2021-05-19 16:40:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: ab706205844aeba952e953402027c1da SHA-1: 90dd9a7de14b640579e30a983e26a8d3bde0200e SHA-256: b1bc60823955b1d2678bd38b4506166376a75e63730e09bdee0635cb90b59fab

62 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document contains multiple embedded URLs and a primary external URI pointing to a game hack or free spins lure. The ML classifier strongly flagged this PDF as malicious, and the presence of download-related text suggests a user-execution vector. The document likely serves as a lure to download a second-stage payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/coin-master-blogspot-free-spins-game-hack
- http://www.makoto.su/images/free-spins-coin-master-2021-hack_GM406889139.pdf
- http://www.makoto.su/images/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdf
- http://www.makoto.su/images/100-free-spins-coin-master_GM406889139.pdf
- http://www.makoto.su/images/coins-master_GM406889139.pdf
- http://www.makoto.su/images/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdf
- http://www.makoto.su/images/coin-master-free-spins-hack_GM406889139.pdf
- http://www.makoto.su/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
- http://www.makoto.su/images/free-coin-master-spins-2021_GM406889139.pdf
- http://www.makoto.su/images/free-robux-without-verification-or-survey_GM431946152.pdf
- http://www.makoto.su/images/coin-master-pc-hack-tool_GM406889139.pdf
- http://www.makoto.su/images/how-do-you-get-roblox-for-free_GM431946152.pdf
- http://www.makoto.su/images/coin-master-hack-pc-2021_GM406889139.pdf
- http://www.makoto.su/images/free-coin-master-spins-daily_GM406889139.pdf
- http://www.makoto.su/images/free-roblox-toy-codes_GM431946152.pdf
- http://www.makoto.su/images/robux-come_GM431946152.pdf
- http://www.makoto.su/images/coin-master-working-hack_GM406889139.pdf
- http://www.makoto.su/images/free-robux-glitch_GM431946152.pdf
- http://www.makoto.su/images/op-rewards-robux_GM431946152.pdf
- http://www.makoto.su/images/www-coin-master-hack_GM406889139.pdf
- http://www.makoto.su/images/coin-master-hack-2021_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off000048b7.bin` `bc6b8dcd3a73c299771a87420042171c981a21149e1cd56a9a3cfab72ca8a41b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x48B7	24380 bytes
`font_01_sfnt_off00008050.bin` `2b0c06a22c9a5edb3443ab86616b5007231cf3140ae51cb1863842ad9c8d5786`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8050	18464 bytes

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