PDF malware analysis — malicious · 916bb6e692e5c688

MALICIOUS

PDF

34.9 KB Created: 2021-07-03 13:14:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 419e6238bedec599b3f10b3351519492 SHA-1: e61c7fc099c618da00a21dbae0897c5e33cd473f SHA-256: 916bb6e692e5c6880ed244dc9920caa2bad5a50f0203990b128667981a0d0502

62 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs and references to game hacks and rewards, strongly suggesting a lure for users to download potentially malicious content. The ML classifier also flagged this PDF with high confidence. The primary IOC is the URL http://netcdn.tw/app/406889139/coin-master-rewards-game-hack, which is likely the download host.

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/coin-master-rewards-game-hack PDF link annotation
- https://www.ashkarco.com/uploaded_files/userfiles/files/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/die-besten-roblox-hacks-2021_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/how-to-get-daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/how-to-get-robux-for-free-legally_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/what-do-roblox-points-do_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/lua-script-pour-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/how-to-hack-roblox-with-dll-njector_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/pokemon-go-free-promo-codes-2021_GM1094591345.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/how-to-hack-robux-may-2021_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/roblox-free-robux-safe_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/free-roblox-gamepass_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/youtube-link-to-roblox-jailbreak-hack-music_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/coinmaster-rewards_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/atticus129-roblox-profile-hacked-account_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/coin-master-cards-hack-2021_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/i-want-free-robux_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-on-phone_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
`stream_002_off0000325c.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x325C	22880 bytes
SHA-256: `a49aa2837dd4d0cddb3dce389d598ba4023eef52902035440c816e956f195ff7`
`font_01_sfnt_off000065c6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65C6	18172 bytes
SHA-256: `6cab49e6ca20ff1f1469f9296ad06f493139d97774cf5cd9dbace47665b9357a`

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