PDF malware analysis — malicious · c6bcfba26d11c395

MALICIOUS

PDF

35.5 KB Created: 2021-06-27 10:40:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 7edd6cef458ae6126ffb908b6a071dfd SHA-1: 579213c02c06f9d7d929d80ad94f4aa3d846ee39 SHA-256: c6bcfba26d11c3952989577a83dd78fc46f59a4b186c96fc14be8ff4cad37e9e

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.co/app/431946152/free-robux-no-human-game-hack PDF link annotation
- https://goodtools.tw/upload/files/coin-master-fan-page-facebook_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-spins-coin-master-ios-2021_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/roblox-download-free-on-ps4_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/roblox-pin-code-free_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/coin-master-hacks-that-work_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-robux-ad_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/rblx-city-free-robux_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/coin-master-hack-spins-android_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/google-only-avatar-free-roblox_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-robux-giveaway_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/coin-master-unlimited-spins_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-roblox-card-codes-november-2021_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/hack-fly-roblox-2021-may_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/how-to-hack-robux-2021_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/counter-blox-roblox-offensive-hacks-tutorial_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/teach-me-to-hack_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_off000030b1.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x30B1	23564 bytes
SHA-256: `0ddba1f92e75a85fb24fcc144e60ab975e59982e2f58a52a189a8c569b7fe956`
`font_01_sfnt_off000065fc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65FC	18976 bytes
SHA-256: `93d41ca18250d29b715cc4c55701a5db5ecf8cecb4cc6f3d6107fe66ce38a57d`

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