PDF malware analysis — malicious · e46b0872c2685874

MALICIOUS

PDF

53.4 KB Created: 2021-05-13 02:07:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: b6c3ef68e0c9847cfaac18d71b0fa34c SHA-1: 398d22e05bda69baea44a8fd373a6f406785b641 SHA-256: e46b0872c26858742b9b9ada60fb950e1d0fc95008fa3158242a1276f42e443c

122 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a password-protected-archive lure. 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 0.9231

Heuristics 5

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.
Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE

Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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/431946152/how-to-get-roblox-money-game-hack PDF link annotation
- https://www.ashkarco.com/uploaded_files/userfiles/files/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/free-roblox-gift-card_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/coin-master-hack-2021-android-apk_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/free-spins-coin-master-ios-2021_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/get-robux-com_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/coin-master-link-today_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/https-rbx-place-rewards_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/how-to-hack-coin-master-ios-2021_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/freerobux-hack-us_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/minecraft-ps4-code-free_GM479516143.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/instagram-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/coin-master-app-hack_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00004c53.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4C53	31976 bytes
SHA-256: `063368a970b4ef6c8489e35f5e7d78f031963b351c01a3e170b21aaa89fa28fb`
`font_01_sfnt_off0000939e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x939E	8376 bytes
SHA-256: `092b7a11ef2af93d0b61b37032e6f669359ea7bc5bcb682d43a712f599a5ca39`
`font_02_sfnt_off0000ae6d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAE6D	18428 bytes
SHA-256: `c447f334fad9b15f432f5aac5fa8081b18071b5b9f1330fc1e6c33f3b8eba776`

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