PDF malware analysis — malicious · 577b22a84c868631

MALICIOUS

PDF

41.6 KB Created: 2021-05-19 11:30:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 9b04b917b6010f147fc97a6488a470a9 SHA-1: 93065317d048739fd983d06fab84809d4e24a896 SHA-256: 577b22a84c868631be7bbc3909beb3db908d9fcc99e9109e6e69cc9faa8a3b16

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 0.9971

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-spins-on-coin-master-game-hack PDF link annotation
- http://kermas.eu/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
- http://kermas.eu/images/free-minecraft-texture-packs-java_GM479516143.pdfIn PDF document text
- http://kermas.eu/images/robux-free-online_GM431946152.pdfIn PDF document text
- http://kermas.eu/images/clean-master-coins-hack_GM406889139.pdfIn PDF document text
- http://kermas.eu/images/coin-master-free-spins-without-verification_GM406889139.pdfIn PDF document text
- http://kermas.eu/images/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
- http://kermas.eu/images/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://kermas.eu/images/roblox-free-clothes-codes_GM431946152.pdfIn PDF document text
- http://kermas.eu/images/free-coin-master-spins_GM406889139.pdfIn PDF document text
- http://kermas.eu/images/coin-master-shield-hack_GM406889139.pdfIn PDF document text
- http://kermas.eu/images/roblox-com-games-referrer-roblox-player_GM431946152.pdfIn PDF document text
- http://kermas.eu/images/coin-master-hack-apk-35-18_GM406889139.pdfIn PDF document text
- http://kermas.eu/images/20210-robux_GM431946152.pdfIn PDF document text
- http://kermas.eu/images/generator-robux_GM431946152.pdfIn PDF document text
- http://kermas.eu/images/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
- http://kermas.eu/images/roblox-tracker_GM431946152.pdfIn PDF document text
- http://kermas.eu/images/pubg-uc-online-free_GM1330123889.pdfIn PDF document text
- http://kermas.eu/images/game-hunters-coin-master_GM406889139.pdfIn PDF document text
- http://kermas.eu/images/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
- http://kermas.eu/images/free-robux-only-username-no-human-verification_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_003_off0000465a.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x465A	25488 bytes
SHA-256: `b7d6dff418e6a5de1be91d5f02aad8d0b350b34956d60e1b1384a29fd26aa0e8`
`font_01_sfnt_off0000813a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x813A	17884 bytes
SHA-256: `addbd5428a422ca7211e94293fed3a4f98c85d5f6337328d4d3623e90d90c649`

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