PDF malware analysis — malicious · 01a2df81733026a2

MALICIOUS

PDF

45.6 KB Created: 2021-05-11 01:00:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 00467475e86a158be68a17f44e2e2791 SHA-1: 5299dccb574364d97d9ba6e9378715213567b810 SHA-256: 01a2df81733026a20c272001e52425d4617258ab28eb642f402b047cd89c0cec

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 0.9507

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/roblox-free-robux-hack-game-hack PDF link annotation
- http://sellrbuyhere.com/uploaded_files/userfiles/files/coin-master-blogspot_GM406889139.pdfIn PDF document text
- http://sellrbuyhere.com/uploaded_files/userfiles/files/download-hacked-games-com-coin-master_GM406889139.pdfIn PDF document text
- http://sellrbuyhere.com/uploaded_files/userfiles/files/how-do-you-earn-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
- http://sellrbuyhere.com/uploaded_files/userfiles/files/free-robux-meme_GM431946152.pdfIn PDF document text
- http://sellrbuyhere.com/uploaded_files/userfiles/files/roblox-free-online-game_GM431946152.pdfIn PDF document text
- http://sellrbuyhere.com/uploaded_files/userfiles/files/hack-coin-master-343-apk_GM406889139.pdfIn PDF document text
- http://sellrbuyhere.com/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
- http://sellrbuyhere.com/uploaded_files/userfiles/files/daily-spin_GM406889139.pdfIn PDF document text
- http://sellrbuyhere.com/uploaded_files/userfiles/files/robux-xyz_GM431946152.pdfIn PDF document text
- http://sellrbuyhere.com/uploaded_files/userfiles/files/how-do-you-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
- http://sellrbuyhere.com/uploaded_files/userfiles/files/haktuts-coin-master-free-spin-link-today_GM406889139.pdfIn PDF document text
- http://sellrbuyhere.com/uploaded_files/userfiles/files/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
- http://sellrbuyhere.com/uploaded_files/userfiles/files/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
- http://sellrbuyhere.com/uploaded_files/userfiles/files/coin-master-free-spins-bit-ly_GM406889139.pdfIn PDF document text
- http://sellrbuyhere.com/uploaded_files/userfiles/files/free-robux-hack_GM431946152.pdfIn PDF document text
- http://sellrbuyhere.com/uploaded_files/userfiles/files/coin-master-100-spin-hack_GM406889139.pdfIn PDF document text
- http://sellrbuyhere.com/uploaded_files/userfiles/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
- http://sellrbuyhere.com/uploaded_files/userfiles/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
- http://sellrbuyhere.com/uploaded_files/userfiles/files/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text
- http://sellrbuyhere.com/uploaded_files/userfiles/files/what-is-a-minecraft-client_GM479516143.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_off00004a9b.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A9B	25232 bytes
SHA-256: `69e86a08cd24930d546c1fe96010ffa4ce56d96385f1bdd5982b32842a510cd1`
`font_01_sfnt_off0000853a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x853A	2912 bytes
SHA-256: `02b35010e2614e3cc95ac6414c49295350c91fdfcc4b4cad27ffdbc10e80df7f`
`font_02_sfnt_off00008f37.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8F37	18488 bytes
SHA-256: `44072fbb5c45a7604268a2c6438126b7db3492802a9c8847ecb07522db400813`

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