PDF malware analysis — malicious · 8dbb226f58613971

MALICIOUS

PDF

33.9 KB Created: 2021-07-05 00:29:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: d6198e4fb58cb0101b3afb285ea19e71 SHA-1: 9221c61dfa6d7b17ca4740c2c13ca0300cfbb6c6 SHA-256: 8dbb226f5861397105e439d34aa7068eb496f85b2c6133ec3361ee62518fb6db

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/roblox-controversy-game-hack PDF link annotation
- https://www.sarsen.net/uploads/files/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/how-to-free-someone-in-prison-life-roblox_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/free-robux-instantly_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/mcpe-116_GM479516143.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/free-minecraft-wallpaper_GM479516143.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/free-spins-coin-master-october-13-2021_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/coin-master-apk-hack-download_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/how-to-legit-hack-into-somebodies-roblox-account_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/how-to-get-gold-cards-on-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/free-roblox-accounts-2021-september_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/free-robux-live_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/how-to-use-cheat-engine-with-roblox_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/roblox-free-gift-card-org_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/how-do-you-log-in-if-hacked-in-roblox_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/coin-master-free-spins-hack-but-no-surveys_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_off00002d4e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2D4E	22512 bytes
SHA-256: `0fd40028ddd38220150cbd2de1a091bd8175f12ffa4bcda039f86a3e753ce9c4`
`font_01_sfnt_off00005f8f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F8F	18884 bytes
SHA-256: `32197f25e837c1a0057b72429905b673d203430731dc5a800ebb0a2989bddf5d`

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