PDF malware analysis — malicious · c5d4cdbdc0d1f0fd

MALICIOUS

PDF

42.2 KB Created: 2021-05-13 04:43:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 3a0ef4d03d6dd497db2db663c52e91b0 SHA-1: 1e48609f8ed30b346281b2eeb623853f0de23712 SHA-256: c5d4cdbdc0d1f0fd578860a48def3a4d8943d9aa179f714558ede92aca416bf4

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/install-coin-master-game-hack PDF link annotation
- http://pianoservice.com.ua/images/what-are-points-for-in-roblox_GM431946152.pdfIn PDF document text
- http://pianoservice.com.ua/images/free-minecraft-hosting_GM479516143.pdfIn PDF document text
- http://pianoservice.com.ua/images/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
- http://pianoservice.com.ua/images/coin-master-free-spins-daily-1-ga_GM406889139.pdfIn PDF document text
- http://pianoservice.com.ua/images/infinite-robux_GM431946152.pdfIn PDF document text
- http://pianoservice.com.ua/images/minecraft-xbox-one-free_GM479516143.pdfIn PDF document text
- http://pianoservice.com.ua/images/buy-robux-free_GM431946152.pdfIn PDF document text
- http://pianoservice.com.ua/images/free-robux-script_GM431946152.pdfIn PDF document text
- http://pianoservice.com.ua/images/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
- http://pianoservice.com.ua/images/roblox-source_GM431946152.pdfIn PDF document text
- http://pianoservice.com.ua/images/how-to-hack-coins-in-archery-master-3d_GM406889139.pdfIn PDF document text
- http://pianoservice.com.ua/images/free-spins-promo-code-for-coin-master_GM406889139.pdfIn PDF document text
- http://pianoservice.com.ua/images/free-spins-coin-master-android_GM406889139.pdfIn PDF document text
- http://pianoservice.com.ua/images/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
- http://pianoservice.com.ua/images/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
- http://pianoservice.com.ua/images/how-to-get-a-free-dominus-in-roblox_GM431946152.pdfIn PDF document text
- http://pianoservice.com.ua/images/hacker-minecraft-song_GM479516143.pdfIn PDF document text
- http://pianoservice.com.ua/images/roblox-hack-com_GM431946152.pdfIn PDF document text
- http://pianoservice.com.ua/images/spin-coin-master_GM406889139.pdfIn PDF document text
- http://pianoservice.com.ua/images/blogger-coin-master-free-spins_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_off00004b46.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B46	25020 bytes
SHA-256: `16a1505666f7d6cdfd014536f5e1aab8771b80201640fd63efabd32d2383b565`
`font_01_sfnt_off00008463.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8463	17620 bytes
SHA-256: `bdd3f6fa08a68690a33effe7c91399080072412a80d1c2cf12d0a6868a7ffe9a`

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