PDF malware analysis — malicious · aa3d13d66c2c8d56

MALICIOUS

PDF

43.8 KB Created: 2021-05-13 18:01:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: c54cb45208e46fca21cecaec605a87aa SHA-1: 1631d266ecd27f3d627f2ff2b8481e79c854f037 SHA-256: aa3d13d66c2c8d56bbd51bb882e5480beb32ef908c0d228f521c0241f649331b

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 0.9969

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.xyz/app/431946152/free-robux-websites-no-human-verification-game-hack PDF link annotation
- https://pfpro.de/ckfinder/userfiles/files/coin-master-pro-hack_GM406889139.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/free-spins-for-coin-masters_GM406889139.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/coin-master-hack-for-android_GM406889139.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/free-roblox-gift-card-codes-2021-unused_GM431946152.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/get-roebucks-com_GM431946152.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/roblox-avatar-tester_GM431946152.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/apps-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/free-robux-codes-generator_GM431946152.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/minecraft-116-apk-download_GM479516143.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/apps-to-hack-coin-master_GM406889139.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/roblox-free-models_GM431946152.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_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
`stream_003_off0000483b.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x483B	26860 bytes
SHA-256: `376e19419d58c1d045498d8a0b9e4bf70708993388304f89dba6f99fc24835b7`
`font_01_sfnt_off000086ca.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x86CA	19056 bytes
SHA-256: `b278ed256549c6e4f6c448dba943d0e72c7f64ebe7340c12334ea4705f26c648`

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