PDF malware analysis — malicious · b70610afbbb60a48

MALICIOUS

PDF

41.9 KB Created: 2021-05-13 18:36:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 48cd1b2897dd28afe91656d4c03bb0ad SHA-1: 17ccafacbb4bad1b7095cd2926fb8db596a4d43b SHA-256: b70610afbbb60a48b462978cac8b216519f8ae88e9d98aef7249fbbe1fa42dad

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 0.9971

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/406889139/free-coin-master-spins-game-hack PDF link annotation
- https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/free-bobux_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-free-spins-link-no-verification-code_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/where-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/free-roblox-executor_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/coinmaster-spin-ml_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/master-8-ball-pool-free-coins_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/free-spins-coin-master-no-verification_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-free-download-pc_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/free-robux-apk_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_003_off00004aa6.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4AA6	24440 bytes
SHA-256: `f68a0c908409cb588d134be1ac2ae6f148d02850cb97cd38cc7ae65e0e1edd2f`
`font_01_sfnt_off00008294.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8294	17884 bytes
SHA-256: `dbba0adc3b1b7bb8b2e5e51fec5d28ab169e2f7a165ed2a14d616932af559aea`

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