PDF malware analysis — malicious · 0759f553e478191b

MALICIOUS

PDF

43.6 KB Created: 2021-06-03 06:28:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 1539e01c49854380d097d84c4c3f595d SHA-1: 94bb5184598b17a34ab6d926de263e18e7b7a25c SHA-256: 0759f553e478191b9072e31d3f964b2cc69a3f0ad38b2441e0621ae1cbea8e9e

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 0.9865

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.online/app/406889139/coin-master-daily-free-spins-link-app-download-game-hack PDF link annotation
- http://www.biotrade.com.au/uploaded_files/userfiles/files/minecraft-mojang-free_GM479516143.pdfIn PDF document text
- http://www.biotrade.com.au/uploaded_files/userfiles/files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
- http://www.biotrade.com.au/uploaded_files/userfiles/files/free-robux-no-email_GM431946152.pdfIn PDF document text
- http://www.biotrade.com.au/uploaded_files/userfiles/files/free-robux-not-fake_GM431946152.pdfIn PDF document text
- http://www.biotrade.com.au/uploaded_files/userfiles/files/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
- http://www.biotrade.com.au/uploaded_files/userfiles/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
- http://www.biotrade.com.au/uploaded_files/userfiles/files/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
- http://www.biotrade.com.au/uploaded_files/userfiles/files/free-outfits-roblox_GM431946152.pdfIn PDF document text
- http://www.biotrade.com.au/uploaded_files/userfiles/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
- http://www.biotrade.com.au/uploaded_files/userfiles/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
- http://www.biotrade.com.au/uploaded_files/userfiles/files/make-free-robux_GM431946152.pdfIn PDF document text
- http://www.biotrade.com.au/uploaded_files/userfiles/files/minecraft-classic-free_GM479516143.pdfIn PDF document text
- http://www.biotrade.com.au/uploaded_files/userfiles/files/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
- http://www.biotrade.com.au/uploaded_files/userfiles/files/free-robux-games_GM431946152.pdfIn PDF document text
- http://www.biotrade.com.au/uploaded_files/userfiles/files/pokemon-go-free-legendary_GM1094591345.pdfIn PDF document text
- http://www.biotrade.com.au/uploaded_files/userfiles/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
- http://www.biotrade.com.au/uploaded_files/userfiles/files/roblox-how-to-be-a-nerd-no-robux-or-hacks_GM431946152.pdfIn PDF document text
- http://www.biotrade.com.au/uploaded_files/userfiles/files/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
- http://www.biotrade.com.au/uploaded_files/userfiles/files/robux-hack-2021_GM431946152.pdfIn PDF document text
- http://www.biotrade.com.au/uploaded_files/userfiles/files/free-robux-clothes_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_004_off00004fc2.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4FC2	23812 bytes
SHA-256: `5a472fa96e4fd259f8a055e908513ca6f9c28ddd09a1cee8a3676d2b4c9b6e98`
`font_01_sfnt_off0000860c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x860C	18816 bytes
SHA-256: `b8b2cf79b84991169ffb18394fb1199612b1ccdb00c40184eec9f78d02156a2a`

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