PDF malware analysis — malicious · d9ffef86f8fd035b

MALICIOUS

PDF

46.0 KB Created: 2021-06-07 16:43:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: a8e68ee071d30c94bd2510db4b7b7b79 SHA-1: 1849029d99e830220de6a27dfeb17da545e098b5 SHA-256: d9ffef86f8fd035bc41150de643504e9ab6a1a4e1f37ee5214b9be2239ddbb53

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 0.9864

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 https://netcdn.tw/app/431946152/roblox-free-phantom-forces-account-game-hack PDF link annotation
- https://www.liputanbali.com/assets/CKImages/files/coin-master-hack-without-verification-ios_GM406889139.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/coin-master-free-attack_GM406889139.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/roblox-com-games-referrer-roblox-player_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/free-robux-pin-codes_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/free-robux-legit_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/coin-master-hack-link_GM406889139.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/roblox-but_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/free-robux-pins_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/coin-master-hack-tool-exe_GM406889139.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/free-robux-easy_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/robux-hack-no-verification_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/how-to-get-free-premium-roblox_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_004_off000053be.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x53BE	25768 bytes
SHA-256: `18c6d8cf0709f90f7f795de095cf9049c981e78f2ddacf0f06ed339f3b49ec64`
`font_01_sfnt_off00008f67.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8F67	19000 bytes
SHA-256: `18b5bdd0c2890e81fe2cdcdef5157b8f21a08e507f5ac890385b71d459ce080b`

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