PDF malware analysis — malicious · ae4e9b004a140162

MALICIOUS

PDF

44.5 KB Created: 2021-06-03 08:17:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22

MD5: e9539cdcfb9257d55224366f2d1f485c SHA-1: ea3e81d43d394da0d7b9afc2ea4cfce86329469f SHA-256: ae4e9b004a14016289e8e659775a286c4bf9911f836b267617cce06d2603cbb3

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it is a malicious redirector, specifically targeting users interested in game hacks and free currency. The primary URL leads to known malicious infrastructure designed to lure victims. While no scripts were extracted, the PDF structure and embedded links strongly suggest a phishing or scam attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9865

Heuristics 4

PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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
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.online/app/431946152/apps-for-free-robux-game-hack In PDF document text
- https://www.legclub.org/uploads/files/files/minecraft-kill-aura_GM479516143.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/free-robux-quiz_GM431946152.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/free-exploits-for-roblox_GM431946152.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/coin-master-free-spins-and-coins-generator_GM406889139.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/coin-master-free-pin_GM406889139.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/minecraft-mobile-free_GM479516143.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/coin-master-hack-org_GM406889139.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/free-chest-coin-master_GM406889139.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/roblox-hax_GM431946152.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/hack-dragon-ball-rage-roblox-mobil_GM431946152.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/roblox-apk-hack_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_off00005023.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5023	26040 bytes
SHA-256: `968817a3e2751d39743c83d00851b4f63d735b57bd3d5836c438e773753574d5`
`font_01_sfnt_off00008b74.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B74	18192 bytes
SHA-256: `b6bed13222f637b3eaa93fd3412fcfb5f097d091c9d6b8306e759aa57a7fe68b`

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