PDF malware analysis — malicious · 562a512202a02a63

MALICIOUS

PDF

34.4 KB Created: 2021-07-03 11:22:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 90cc0e2405b51a5957778f2a5247cb64 SHA-1: 9923850ce62b66afb3a1c0d860390c595a31de90 SHA-256: 562a512202a02a631c677cc90561de3c6cb25c52d2df898a77f835d760f32731

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/431946152/roblox-avatar-editor-free-game-hack PDF link annotation
- http://www.duchem.ae/uploaded_files/userfiles/files/free-robux-hack_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/archery-master-3d-unlimited-coins-hack_GM406889139.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/how-to-get-hacks-in-jailbreak-roblox_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/hack-roblox-pc-2021_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/free-foxy-food-coin-master_GM406889139.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/combo-free-roblox-site-v3rmillionnet_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/how-to-get-free-robux-2021-no-survey-or-download_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/coin-master-hack-version-download-2021-android_GM406889139.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/free-roblox-body_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/roblox-skybox-changer-hack_GM431946152.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/hack-coin-master-2021_GM406889139.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/robux-boost_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/how-to-get-more-robux_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/how-to-add-mods-to-minecraft-pe_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_off00002f88.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F88	22364 bytes
SHA-256: `b7e1724bed37f29a8a8717d1e7319c4fdb91f3fd153fdf0d4bea5f26aabecc96`
`font_01_sfnt_off00006101.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6101	19164 bytes
SHA-256: `99a2dfea53e00249ebfbe683b8e747107fff044a91516b627ae8fcb1da43db3e`

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