PDF malware analysis — malicious · f1c5de5c50a86d65

MALICIOUS

PDF

47.5 KB Created: 2021-05-13 10:07:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: e677030beb57232fc3d13c3c1c524f32 SHA-1: be724044ee911a1590feb5efe129f7d8b2dd3bb1 SHA-256: f1c5de5c50a86d6586389fbbb13f4f615e5b7d3910d836650c3e4f9349df2247

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 0.9977

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-codes-2021-not-used-game-hack PDF link annotation
- https://www.andhrarealty.in/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/old-roblox-accounts-for-free_GM431946152.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/coin-master-hack-without-verification-code-2021_GM406889139.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/wurst-client-download_GM479516143.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/free-spins-coin-master-without-completing-offers_GM406889139.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/pop-slots-free-vegas-casino-slot-machine-game-coin-master_GM406889139.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/coin-master-hack-software_GM406889139.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/free-links-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/reddit-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/what-do-points-do-in-roblox_GM431946152.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/roblox-adopt-me-free-pets_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_off00004d58.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4D58	31524 bytes
SHA-256: `51810e9d71ee269e160bb421b4627907da06acb4a7e7eca431e71c52884bbb3b`
`font_01_sfnt_off000095d0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x95D0	18880 bytes
SHA-256: `342a41804753b243bf13fa7c19db71c7debbb8fa80f4750c82899b0ccf7aa343`

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