PDF malware analysis — malicious · 8a78cbc6ee47889c

MALICIOUS

PDF

42.3 KB Created: 2021-05-11 07:10:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: a51ec7773042bbb05149b38f3fb6cd8d SHA-1: 0aed958d8e49325bab3b786142b0d5a925c616ff SHA-256: 8a78cbc6ee47889cf0e30319bb09055e13a3cf44b552db10435745aae7492aad

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing for a game hack lure, directing users to a suspicious URL. The document body and embedded URLs reinforce this lure, indicating a phishing attempt to redirect users to potentially malicious content. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to exploit user interest in game cheats to lead them to a malicious site.

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/hack-my-game-xyz-coin-master-game-hack PDF link annotation
- https://www.devries-group.de/images/free-roblox-hack-us_GM431946152.pdfIn PDF document text
- https://www.devries-group.de/images/minecraft-for-free-games_GM479516143.pdfIn PDF document text
- https://www.devries-group.de/images/1x1x1x1-roblox-id_GM431946152.pdfIn PDF document text
- https://www.devries-group.de/images/daily-coin-master-free-spin-apk_GM406889139.pdfIn PDF document text
- https://www.devries-group.de/images/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
- https://www.devries-group.de/images/coin-master-hack-version-download-2021-android_GM406889139.pdfIn PDF document text
- https://www.devries-group.de/images/free-robux-no-email_GM431946152.pdfIn PDF document text
- https://www.devries-group.de/images/minecraft-pocket-edition-apk-free-download_GM479516143.pdfIn PDF document text
- https://www.devries-group.de/images/coin-master-hack-cheat-generator-coins-and-spins-unlimited_GM406889139.pdfIn PDF document text
- https://www.devries-group.de/images/coin-master-game-free_GM406889139.pdfIn PDF document text
- https://www.devries-group.de/images/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
- https://www.devries-group.de/images/roblox-com-hack_GM431946152.pdfIn PDF document text
- https://www.devries-group.de/images/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
- https://www.devries-group.de/images/free-robux-without-verify_GM431946152.pdfIn PDF document text
- https://www.devries-group.de/images/coin-master-free-spins-link-download-for-iphone_GM406889139.pdfIn PDF document text
- https://www.devries-group.de/images/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.devries-group.de/images/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.devries-group.de/images/i-robux_GM431946152.pdfIn PDF document text
- https://www.devries-group.de/images/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
- https://www.devries-group.de/images/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
- https://coinmasterspinandcoin.comIn 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_off00004a27.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A27	24840 bytes
SHA-256: `c43606761e86facf935b75a792412bf4a12b424b0c14265f1e968e6f94119ee5`
`font_01_sfnt_off00008223.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8223	18468 bytes
SHA-256: `3c9c6ea8bcd6cc2f23e874c3935261d3a1655c3ba572cd8a73a47bfae21aa7b1`

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