PDF malware analysis — malicious · 148ed79b8255341c

MALICIOUS

PDF

34.4 KB Created: 2021-07-03 15:08:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: b609fc4d9a5f4366cb8f85b9e8a87b02 SHA-1: 87dc675ed19512095c070f50e40c49c1ee287a33 SHA-256: 148ed79b8255341cda630d15c71e583559383f2c21baa36a27e9b4774399b2df

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/406889139/free-spins-and-coins-on-coin-master-game-hack PDF link annotation
- http://www.inoxograde.hr/files/earn-free-robux-with-points_GM431946152.pdfIn PDF document text
- http://www.inoxograde.hr/files/is-minecraft-free-on-ps4_GM479516143.pdfIn PDF document text
- http://www.inoxograde.hr/files/coin-master-free-spins-no-survey_GM406889139.pdfIn PDF document text
- http://www.inoxograde.hr/files/dark-roblox-hacking_GM431946152.pdfIn PDF document text
- http://www.inoxograde.hr/files/roblox-hack-proxo-smasher_GM431946152.pdfIn PDF document text
- http://www.inoxograde.hr/files/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
- http://www.inoxograde.hr/files/hack-roblox-in-game_GM431946152.pdfIn PDF document text
- http://www.inoxograde.hr/files/free-yellow-roblox-girlfriend_GM431946152.pdfIn PDF document text
- http://www.inoxograde.hr/files/roblox-games-free_GM431946152.pdfIn PDF document text
- http://www.inoxograde.hr/files/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://www.inoxograde.hr/files/oprewards-com-roblox_GM431946152.pdfIn PDF document text
- http://www.inoxograde.hr/files/roblox-free-robux-2021_GM431946152.pdfIn PDF document text
- http://www.inoxograde.hr/files/roblox-creepy-april-fools-hack_GM431946152.pdfIn PDF document text
- http://www.inoxograde.hr/files/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
- http://www.inoxograde.hr/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
- http://www.inoxograde.hr/files/coin-master-hack-apk-facebook-login_GM406889139.pdfIn PDF document text
- http://www.inoxograde.hr/files/how-to-hack-breaking-point-roblox-2021_GM431946152.pdfIn PDF document text
- http://www.inoxograde.hr/files/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
- http://www.inoxograde.hr/files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
- http://www.inoxograde.hr/files/free-robux-without-human-verification-2021_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
`stream_002_off00002f5d.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x2F5D	23176 bytes
SHA-256: `49b76538b44e367c1114f52ed7b6c36f6b3240ecca4584427e9518538412d484`
`font_01_sfnt_off00006395.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6395	18348 bytes
SHA-256: `99aa2d2b2e9c114759ac0d3175951e1a7ccd7b87db14ea3fc4aa40a1608bcbe0`

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