PDF malware analysis — malicious · 3bc828aa0ab876b9

MALICIOUS

PDF

35.1 KB Created: 2021-06-19 13:56:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 0655ded83f5624637183ec471b96066b SHA-1: aaeec82db97e868fe998d0cd2b9300fa468c6eb9 SHA-256: 3bc828aa0ab876b98883c72aafe67d1f26ad8c5ca41f90d604c03c395630dedb

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-use-undetected-cheat-engine-on-roblox-game-hack PDF link annotation
- https://www.titastar.com/uploaded_files/userfiles/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/free-roblox-cheats-and-hacks_GM431946152.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/free-2021-robux_GM431946152.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/working-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/free-robux-survey_GM431946152.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/hack-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/coin-master-32-mod-hack-apk-download_GM406889139.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/coin-master-hack-no-survey_GM406889139.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/get-free-robux-com_GM431946152.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/regal-world-coin-master_GM406889139.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/free-robux-on-phone_GM431946152.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/hack-tiktok-fans-free_GM835599320.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/free-roblox-acc_GM431946152.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/how-to-get-free-roblox-gift-cards-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/blox-land-free-robux_GM431946152.pdfIn PDF document text
- https://www.titastar.com/uploaded_files/userfiles/files/play-minecraft-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
`stream_002_off0000309a.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x309A	22752 bytes
SHA-256: `157cb1bfcbea5b34a1b8ae53f185624164d488eff88672848793f321c0bf5cee`
`font_01_sfnt_off0000639e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x639E	19216 bytes
SHA-256: `8d1865bb569cbeebe452da6a101f4b32bc9a2a7c79c2c24e61414735e8a921f0`

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