PDF malware analysis — malicious · ac4e4d9f652b371e

MALICIOUS

PDF

42.7 KB Created: 2021-05-12 20:37:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 26431785795c5f2b37670b350ea1e0cb SHA-1: a47ee5436009db9ef7047599b15cc7762aaf5c04 SHA-256: ac4e4d9f652b371ec48a68e98bd672b6115261aaff2cc0e19138ef099f03ea2d

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/coinmaster-fan-page-game-hack PDF link annotation
- https://maths-pdf.fr/ckfinder/userfiles/files/roblox-free-items_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/minecraft-pe-hacks-2021_GM479516143.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-free-daily-spins-2021_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-free-online-game_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/www-rubux_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/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/free-roblox-script-executor_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-apk-mod-free-download_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/cheats-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/free-robux-no-verify_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-2021-free-spins-link-2021_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/how-to-get-free-robux-promo-codes_GM431946152.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/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-free-spins-app_GM406889139.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_off00004b33.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B33	25432 bytes
SHA-256: `2edce7b37b33bbb6b3c5a952d0bdb1519d5ee7b7720130a35a297a3cf6134801`
`font_01_sfnt_off00008440.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8440	18412 bytes
SHA-256: `362c1088091ca1acb0efc5884e6feebbf648ceeb811ef0e2358676d84db8b2fd`

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