PDF malware analysis — malicious · 76bdfb4430cdcc84

MALICIOUS

PDF

51.4 KB Created: 2021-06-07 16:20:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24

MD5: 80b4d31711cfc8f959ddc1d7cdcc64f0 SHA-1: a950c7b85795a5e8e88f5491ae9726ace7943bed SHA-256: 76bdfb4430cdcc8479cdbd876f561e831639e14dfc5e0790714e737fc05d1c7d

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 0.9861

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.tw/app/431946152/robux-hacks-without-downloading-apps-game-hack PDF link annotation
- http://apteka-ot-sklada.com.ua/images/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
- http://apteka-ot-sklada.com.ua/images/minecraft-java-edition-free-code_GM479516143.pdfIn PDF document text
- http://apteka-ot-sklada.com.ua/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- http://apteka-ot-sklada.com.ua/images/minecraft-ps4-code-free_GM479516143.pdfIn PDF document text
- http://apteka-ot-sklada.com.ua/images/create-minecraft-server-free_GM479516143.pdfIn PDF document text
- http://apteka-ot-sklada.com.ua/images/get-free-robux-info_GM431946152.pdfIn PDF document text
- http://apteka-ot-sklada.com.ua/images/get-free-robux-2021_GM431946152.pdfIn PDF document text
- http://apteka-ot-sklada.com.ua/images/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
- http://apteka-ot-sklada.com.ua/images/minecraft-mac-free_GM479516143.pdfIn PDF document text
- http://apteka-ot-sklada.com.ua/images/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdfIn PDF document text
- http://apteka-ot-sklada.com.ua/images/robux-generator-no-survey_GM431946152.pdfIn PDF document text
- http://apteka-ot-sklada.com.ua/images/roblox-promo-code-hack-robux-pastebin_GM431946152.pdfIn PDF document text
- http://apteka-ot-sklada.com.ua/images/free-followers-for-tiktok_GM835599320.pdfIn PDF document text
- http://apteka-ot-sklada.com.ua/images/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
- http://apteka-ot-sklada.com.ua/images/roblox-hacking-website_GM431946152.pdfIn PDF document text
- http://apteka-ot-sklada.com.ua/images/pokemon-go-free-7km-eggs-august-2021_GM1094591345.pdfIn PDF document text
- http://apteka-ot-sklada.com.ua/images/roblox-hack-tool_GM431946152.pdfIn PDF document text
- http://apteka-ot-sklada.com.ua/images/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
- http://apteka-ot-sklada.com.ua/images/minecraft-pocket-edition-apk-free-download_GM479516143.pdfIn PDF document text
- http://apteka-ot-sklada.com.ua/images/roblox-play-as-guest-free_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_004_off00005447.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5447	35368 bytes
SHA-256: `a670c8297010c07da62bee0634139eb8c8a6bfe913dc2db34c39a9e50eb6ba34`
`font_01_sfnt_off0000a203.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA203	19880 bytes
SHA-256: `4415334ec3db7daa53ce9ce07660e72363b082ca57be5fb302c01b1aeaa40914`

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