PDF malware analysis — malicious · ec504870f7bc8bdf

MALICIOUS

PDF

35.1 KB Created: 2021-07-04 11:41:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: c7af03ff327c2f6dc3060b1678f27fdf SHA-1: 4a8b80ed5aa4c7e9cb3fa8f5f563ca39e3f0d81c SHA-256: ec504870f7bc8bdf93c55c24a74c14bd0481a1d925f8ee23db0d0ca8e856dbd9

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-svg-free-game-hack PDF link annotation
- https://htdvn.com/public/upload/files/play-minecraft-online-free_GM479516143.pdfIn PDF document text
- https://htdvn.com/public/upload/files/pokemon-go-free-8-generation_GM1094591345.pdfIn PDF document text
- https://htdvn.com/public/upload/files/how-to-get-free-gamepasses-roblox_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
- https://htdvn.com/public/upload/files/roblox-cheat-engine-bypass-2021-super-power-training_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/coin-master-hack-link-2021_GM406889139.pdfIn PDF document text
- https://htdvn.com/public/upload/files/fighting-free-card-coin-master_GM406889139.pdfIn PDF document text
- https://htdvn.com/public/upload/files/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/best-roblox-hack-ever_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/pubg-4-uccom_GM1330123889.pdfIn PDF document text
- https://htdvn.com/public/upload/files/roblox-hack-tool-free-robux_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/cheat-roblox-madcity-money_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/roblox-exploit-scripts_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
- https://htdvn.com/public/upload/files/roblox-cheat-engine-cheat-table-executor_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/roblox-hack-unlimited-health_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdfIn PDF document text
- https://htdvn.com/public/upload/files/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
- https://htdvn.com/public/upload/files/robux-simulator-lua-c-hack_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
`font_00_sfnt_off00003221.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3221	22856 bytes
SHA-256: `f3232cae8f3be25efb45a7f659a172840b1057ae2073011c347a3ddee3325f15`
`font_01_sfnt_off00006509.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6509	18764 bytes
SHA-256: `d01fb55d319379bc19fcf76ffe4a1ca74764956adac7a954ac4bfc7755e176cd`

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