PDF malware analysis — malicious · acf4a94bfe8de339

MALICIOUS

PDF

34.7 KB Created: 2021-07-03 22:39:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 159a751acb68e4c9b15c94fd83c6644f SHA-1: 10a847f45eca47b2981375d31d3395f9e580b58a SHA-256: acf4a94bfe8de339efebd8a0a40c23224f815c45b840377e92f4c9327b23f1c8

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/406889139/coin-master-time-hack-game-hack PDF link annotation
- http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
- http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/roblox-free-rubox_GM431946152.pdfIn PDF document text
- http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/free-minecraft-mods_GM479516143.pdfIn PDF document text
- http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
- http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/coin-master-70-spin-link_GM406889139.pdfIn PDF document text
- http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/is-there-any-working-robux-hacks-roblox_GM431946152.pdfIn PDF document text
- http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
- http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/https-iosgodscom-topic-20214coinmasterhack_GM406889139.pdfIn PDF document text
- http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/free-minecraft-alts_GM479516143.pdfIn PDF document text
- http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
- http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/how-to-get-any-car-free-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
- http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
- http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/roblox-robux-hack-pro_GM431946152.pdfIn PDF document text
- http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/roblox-free-hate_GM431946152.pdfIn PDF document text
- http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/code-de-cheat-roblox-simulator-de-chiens_GM431946152.pdfIn PDF document text
- http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
- http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/coin-master-tricks_GM406889139.pdfIn PDF document text
- http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/easy-robux-today-com_GM431946152.pdfIn PDF document text
- http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/earn-points-for-robux_GM431946152.pdfIn PDF document text
- http://ginfed.net.co/editor_rc/tools/ckeditor/img/images/files/free-knives-in-assassin-roblox_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_002_off00003209.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3209	22788 bytes
SHA-256: `bd1893e434e102ca420ee303a6b1c2eed596427f2da08ada8b0d3185803a66ba`
`font_01_sfnt_off000064f1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64F1	18264 bytes
SHA-256: `a35f03033499eda65d45903a57c9add3aa2902d7cbd0f8850fdac8c8cf98d449`

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