PDF malware analysis — malicious · 396b3efae29db922

MALICIOUS

PDF

44.6 KB Created: 2021-05-17 11:33:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 1742b3211533ef9ec5849cbaf04d3aca SHA-1: 102d77ef77d44663ed68aa5535f7fceb0d923e1b SHA-256: 396b3efae29db9222cf48fa24eedbb5be997345b13259c006995584719b7272f

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 0.9632

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/406889139/free-mod-apk-coin-master-game-hack PDF link annotation
- https://amozeshportal.ir/assets/uploads/pages/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/master-coin-free-link_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/40-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/coin-master-free-link-blogspot_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/roblox-avatar-tester_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/free-avatar-roblox_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/free-coins-coin-master-haktuts_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
- https://amozeshportal.ir/assets/uploads/pages/files/earn-roblox_GM431946152.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
`stream_003_off00004a53.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A53	24432 bytes
SHA-256: `af10464434a3fe6fc32f2359dfedb2de52fbde415833439928da2dd7c7d5fc63`
`font_01_sfnt_off00008239.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8239	2840 bytes
SHA-256: `3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676`
`font_02_sfnt_off00008bea.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8BEA	18228 bytes
SHA-256: `94a160b3eebda81a774dce60345efae5de7f6df629fda5b11a26048b94d99866`

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