PDF malware analysis — malicious · 25b6379815d455e2

MALICIOUS

PDF

36.6 KB Created: 2021-07-04 04:11:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: ecaa9a8f5b1ceb81e115c5edb6f233aa SHA-1: 80f30b681f2db4630cca7b24e6ac9d4e8664e734 SHA-256: 25b6379815d455e2545d1662f65e0284904d7e29c92741493b37cf6cfcab5fca

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 0.9979

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-roblox-gift-card-codes-2021-unused-game-hack PDF link annotation
- https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/how-to-get-free-gamepasses-roblox_GM431946152.pdfIn PDF document text
- https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/robux-hack_GM431946152.pdfIn PDF document text
- https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/best-free-roblox-models_GM431946152.pdfIn PDF document text
- https://ombalicargo.com/new/public/ckfinder/userfiles/files/free-executor-roblox-2021_GM431946152.pdfIn PDF document text
- https://ombalicargo.com/new/public/ckfinder/userfiles/files/como-conseguir-robux-hack-2021_GM431946152.pdfIn PDF document text
- https://ombalicargo.com/new/public/ckfinder/userfiles/files/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
- https://ombalicargo.com/new/public/ckfinder/userfiles/files/roblox-free-item-codes_GM431946152.pdfIn PDF document text
- https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
- https://ombalicargo.com/new/public/ckfinder/userfiles/files/como-conseguir-badges-hack-roblox_GM431946152.pdfIn PDF document text
- https://ombalicargo.com/new/public/ckfinder/userfiles/files/roblox-live-stream-free-robux_GM431946152.pdfIn PDF document text
- https://ombalicargo.com/new/public/ckfinder/userfiles/files/roblox-da-hood-hack-or-glicht_GM431946152.pdfIn PDF document text
- https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/roblox-free-clolthes_GM431946152.pdfIn PDF document text
- https://ombalicargo.com/new/public/ckfinder/userfiles/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
- https://ombalicargo.com/new/public/ckfinder/userfiles/files/how-to-get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
- https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/roblox-hack-2021-free-in-game_GM431946152.pdfIn PDF document text
- https://ombalicargo.com/new/public/ckfinder/userfiles/files/coin-master-hack-download-ios_GM406889139.pdfIn PDF document text
- https://ombalicargo.com/new/public/ckfinder/userfiles/files/pubg-uc-600_GM1330123889.pdfIn PDF document text
- https://ombalicargo.com/new/public/ckfinder/userfiles/files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/how-to-get-free-minecraft-windows-10_GM479516143.pdfIn PDF document text
- https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/best-gear-free-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
`font_00_sfnt_off000035e1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x35E1	22600 bytes
SHA-256: `ab23c1e2f3af942e0ba4d7f6410d505f27dca982a67dc25ce6e3947c371b3916`
`font_01_sfnt_off0000685a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x685A	19588 bytes
SHA-256: `d0050b22b1575b026cda5754e18fa76c7d99fd57f12d326042661e7eeaa340ba`

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