PDF malware analysis — malicious · d7ed2a05fd9169fc

MALICIOUS

PDF

33.2 KB Created: 2021-07-03 12:03:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 8ab8822d4704a5933f9bb5c92ab9bfc9 SHA-1: 22750506ca668e8caff35ac9747702cfff6559da SHA-256: d7ed2a05fd9169fc9431bdc73b2bbedd703d3a2cf9d248a616e42597eb3600ae

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 0.9824

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/431946152/free-robux-hack-no-human-verification-or-survey-game-hack PDF link annotation
- https://www.twpuc.com.tw/upload/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.twpuc.com.tw/upload/files/free-unlimited-robux_GM431946152.pdfIn PDF document text
- https://www.twpuc.com.tw/upload/files/hack-coin-master-apk-31_GM406889139.pdfIn PDF document text
- https://www.twpuc.com.tw/upload/files/free-robux-for-kids_GM431946152.pdfIn PDF document text
- https://www.twpuc.com.tw/upload/files/coin-master-free-cards-link-2021-today_GM406889139.pdfIn PDF document text
- https://www.twpuc.com.tw/upload/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
- https://www.twpuc.com.tw/upload/files/roblox-top_GM431946152.pdfIn PDF document text
- https://www.twpuc.com.tw/upload/files/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
- https://www.twpuc.com.tw/upload/files/free-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.twpuc.com.tw/upload/files/roblox-cheat-codes_GM431946152.pdfIn PDF document text
- https://www.twpuc.com.tw/upload/files/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
- https://www.twpuc.com.tw/upload/files/minecraft-116-apk-download_GM479516143.pdfIn PDF document text
- https://www.twpuc.com.tw/upload/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
- https://www.twpuc.com.tw/upload/files/free-robux-download_GM431946152.pdfIn PDF document text
- https://www.twpuc.com.tw/upload/files/how-to-watch-ads-for-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.twpuc.com.tw/upload/files/android-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://www.twpuc.com.tw/upload/files/rbx-website_GM431946152.pdfIn PDF document text
- https://www.twpuc.com.tw/upload/files/freespins-coin-master_GM406889139.pdfIn PDF document text
- https://www.twpuc.com.tw/upload/files/pokemon-go-free-fire_GM1094591345.pdfIn PDF document text
- https://www.twpuc.com.tw/upload/files/is-free-robux-real_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
`font_00_sfnt_off00002a6a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2A6A	21992 bytes
SHA-256: `74102dcc846f7e4d4f9e8039f22ac59a9c1aa7e55e0be418f80e95890ab4c9ca`
`font_01_sfnt_off00005af3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5AF3	19796 bytes
SHA-256: `ad19e1b0895485c37a49fe02fea69dabec772aaf5d58694ea1046abdc2ebb73d`

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