PDF malware analysis — malicious · 0223fb4d23274ad7

MALICIOUS

PDF

45.7 KB Created: 2021-05-19 01:44:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 957e40eca4ad3bc7d1d0d86e8c90e481 SHA-1: 12d21b4524eed2a77b42aa6d117d7c2ec6c3ea27 SHA-256: 0223fb4d23274ad7f5098f74700a8c66e97d3604d05fad27f1bc543551512891

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple embedded URLs and a heuristic firing for a 'game hack' lure, strongly suggesting a social engineering attack. The document body, though partially corrupted, contains references to game hacks and directs users to external URLs. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

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 https://netcdn.xyz/app/406889139/free-spins-promo-code-for-coin-master-game-hack PDF link annotation
- http://dndprinting.com/new/public/ckfinder/userfiles/files/download-coin-master-apk-hacked_GM406889139.pdfIn PDF document text
- http://dndprinting.com/new/public/ckfinder/userfiles/files/robux-free-online_GM431946152.pdfIn PDF document text
- http://dndprinting.com/new/public/ckfinder/userfiles/files/how-to-robux_GM431946152.pdfIn PDF document text
- http://dndprinting.com/new/public/ckfinder/userfiles/files/how-to-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
- http://dndprinting.com/new/public/ckfinder/userfiles/files/pubg-uc-hack-apk_GM1330123889.pdfIn PDF document text
- http://dndprinting.com/new/public/ckfinder/userfiles/files/www-rubux_GM431946152.pdfIn PDF document text
- http://dndprinting.com/new/public/ckfinder/userfiles/files/coin-master-game-hacking_GM406889139.pdfIn PDF document text
- http://dndprinting.com/new/public/ckfinder/userfiles/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
- http://dndprinting.com/new/public/ckfinder/userfiles/files/totally-free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
- http://dndprinting.com/new/public/ckfinder/userfiles/files/hack-para-coin-master-singapore_GM406889139.pdfIn PDF document text
- http://dndprinting.com/new/public/ckfinder/userfiles/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- http://dndprinting.com/new/public/ckfinder/userfiles/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
- http://dndprinting.com/new/public/ckfinder/userfiles/files/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
- http://dndprinting.com/new/public/ckfinder/userfiles/files/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
- http://dndprinting.com/new/public/ckfinder/userfiles/files/coin-master-hack-mod_GM406889139.pdfIn PDF document text
- http://dndprinting.com/new/public/ckfinder/userfiles/files/android-coin-master-hack_GM406889139.pdfIn PDF document text
- http://dndprinting.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
- http://dndprinting.com/new/public/ckfinder/userfiles/files/free-pet-treats-coin-master_GM406889139.pdfIn PDF document text
- http://dndprinting.com/new/public/ckfinder/userfiles/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
- http://dndprinting.com/new/public/ckfinder/userfiles/files/mathep_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_003_off00004a53.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A53	31488 bytes
SHA-256: `36de5d6765836326bbdf926ce41f93a9ad2a561b5874f46371db331bb1de4e59`
`font_01_sfnt_off00008ff6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8FF6	18476 bytes
SHA-256: `012804114e8e9e2aa3b79000d66a92024558acae5133cb67a1122bc204fa5aec`

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