PDF malware analysis — malicious · 93fe259efc8a5d43

MALICIOUS

PDF

35.1 KB Created: 2021-06-22 06:20:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 53202db0993363dff723405caec58532 SHA-1: 8b6c1941c0b0de190bd70b383e5f61b7bb2243b1 SHA-256: 93fe259efc8a5d430c4a8c18a5ae549bc9e1f103e8af5d3ace42efc09dc75ad9

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.co/app/431946152/how-to-hack-into-roblox-for-robux-game-hack PDF link annotation
- http://www.duchem.ae/uploaded_files/userfiles/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/roblox-hack-tool_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/free-spin-appscoin-master_GM406889139.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/tiktok-free-3d-model_GM835599320.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/roblox-online-for-free-no-download_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/coin-master-haktuts_GM406889139.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/free-robux-no-generator_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/free-minecraft-account-list_GM479516143.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/coin-master-cheats_GM406889139.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-generator_GM406889139.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/coin-master-apk-free-download_GM406889139.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/minecraft-jar-free_GM479516143.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/blueberry-roblox-hack_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/free-10-dollar-roblox-gift-card_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/real-minecraft-for-free_GM479516143.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/how-to-make-a-minecraft-server-for-free_GM479516143.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
`font_00_sfnt_off000030e5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x30E5	22944 bytes
SHA-256: `e0e62bc2bddabf7795f30a3f328d5f2809d41af51137f1353e598f25ebefe9f5`
`font_01_sfnt_off000063c4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63C4	19228 bytes
SHA-256: `af68d3c9c9451085906df5708e29b01cf54b9614e3c6a4bac7e0b8dd2bfebabb`

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