PDF malware analysis — malicious · 2adec62becc5b648

MALICIOUS

PDF

35.0 KB Created: 2021-07-04 06:32:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: a6e4f604f4c987d3d3d3e6050711b193 SHA-1: 80f0e65504782fe0013ec2e5e65831e2542d95d6 SHA-256: 2adec62becc5b64896570a85afc75d0a766d5ddccb29b65f6205bd45c0197538

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/oginject-co-game-hack PDF link annotation
- https://radiocaxias.com.br/portal/imagens/files/free-coin-master-spins-and-coins-for-daily_GM406889139.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/hacking-into-a-roblox-account2021_GM431946152.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/free-minecraft-server_GM479516143.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/roblox-longest-super-fun-obby-cheats_GM431946152.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/coin-master-villages_GM406889139.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/roblox-coding-classes-free_GM431946152.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/coinmaster-rewards_GM406889139.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/free-sound-id-roblox_GM431946152.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/todays-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/free-outfits-roblox_GM431946152.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/mcpe-master-hack-coin-apk_GM406889139.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/coin-master-fan-page-giveaway_GM406889139.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/coin-master-free-spin-link-twitter_GM406889139.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/coin-master-hack-online-cheat_GM406889139.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/coin-master-online_GM406889139.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/fbchampion_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_002_off000032b7.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x32B7	23156 bytes
SHA-256: `731c53d348dd87ede8a7444cd00d1afbbff40f61cb95779b55bb1aec97b5523f`
`font_01_sfnt_off000066f8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66F8	18020 bytes
SHA-256: `b00a840f39707e8121b97fb48ad5fb2905e8ebddb5967a2ccaceb86904948ea4`

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