PDF malware analysis — malicious · d6f91c827cce0570

MALICIOUS

PDF

34.2 KB Created: 2021-07-06 10:39:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 59e0cca9326aae3408dd9b479adffa5b SHA-1: 42d70ceb9fb89be91374e39cbee5975986989b6f SHA-256: d6f91c827cce057039b028d4073c93807bfd9f58a2ed59bddcaa933ea0f2837e

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.tw/app/431946152/robux-prices-game-hack PDF link annotation
- https://www.simplenepaltravel.com/userfiles/files/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
- https://www.simplenepaltravel.com/userfiles/files/download-coin-master-apk-hacked_GM406889139.pdfIn PDF document text
- https://www.simplenepaltravel.com/userfiles/files/prison-life-roblox-hacks_GM431946152.pdfIn PDF document text
- https://www.simplenepaltravel.com/userfiles/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
- https://www.simplenepaltravel.com/userfiles/files/coin-master-online-free-spin_GM406889139.pdfIn PDF document text
- https://www.simplenepaltravel.com/userfiles/files/free-roblox-gift-card_GM431946152.pdfIn PDF document text
- https://www.simplenepaltravel.com/userfiles/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
- https://www.simplenepaltravel.com/userfiles/files/free-robux-scams_GM431946152.pdfIn PDF document text
- https://www.simplenepaltravel.com/userfiles/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
- https://www.simplenepaltravel.com/userfiles/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
- https://www.simplenepaltravel.com/userfiles/files/free-robux-promo-codes-2021-april_GM431946152.pdfIn PDF document text
- https://www.simplenepaltravel.com/userfiles/files/coin-master-free-gift-cards_GM406889139.pdfIn PDF document text
- https://www.simplenepaltravel.com/userfiles/files/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
- https://www.simplenepaltravel.com/userfiles/files/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.simplenepaltravel.com/userfiles/files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
- https://www.simplenepaltravel.com/userfiles/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
- https://www.simplenepaltravel.com/userfiles/files/coin-master-ios-hack-download_GM406889139.pdfIn PDF document text
- https://www.simplenepaltravel.com/userfiles/files/hack-coin-master-apk-358_GM406889139.pdfIn PDF document text
- https://www.simplenepaltravel.com/userfiles/files/coin-master-free-spins-23-march-2021_GM406889139.pdfIn PDF document text
- https://www.simplenepaltravel.com/userfiles/files/coin-master-free-spins-youthnow_GM406889139.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_off00002fc7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2FC7	22244 bytes
SHA-256: `cfba4bf1a0e9fb8dd1e078c541ace1494b0ea78912ab25f4bf9d9de7b3885dcd`
`font_01_sfnt_off0000616e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x616E	18824 bytes
SHA-256: `917b2b595c85e899e08b6a40e7434d48f59ea0235caebc632e03070b6eb7ba4e`

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