PDF malware analysis — malicious · b3e612e6b61c0d4a

MALICIOUS

PDF

47.2 KB Created: 2021-05-14 17:34:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26

MD5: 2cac6b3b0726d388250d98ac8da817f6 SHA-1: 555f9576395921f3f175b0ef9b3810f3f0d05f97 SHA-256: b3e612e6b61c0d4a765dc96d366ea62de01a892616479828a244257a4aeca2f9

200 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically promoting 'free generator / game hack' lures. The presence of a fake CAPTCHA heuristic further suggests a social engineering tactic to trick users into interacting with malicious content. While no scripts were explicitly extracted, the nature of the links and the lure indicate a phishing or scam attempt designed to lead users to potentially harmful websites.

Machine Learning

Nyx PDF Classifier malicious score 0.8948

Heuristics 5

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.
Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA

Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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.xyz/app/431946152/orewards-com-free-robux-game-hack In PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/free-roblox-executor_GM431946152.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/minecraft-win-10-free_GM479516143.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/roblox-re_GM431946152.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/50-000-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/robloxhacks_GM431946152.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/real-coin-master-hacks_GM406889139.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/free-roblox-com_GM431946152.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/sb-game-hacker-coin-master_GM406889139.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
- http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/minecraft-windows-10-hack-client-2021_GM479516143.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00004cad.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4CAD	25860 bytes
SHA-256: `195bb19bc55ac8f92ae214b79f3db9c4a389917489ab60b4b2e62330d982c3f7`
`font_01_sfnt_off000088bf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x88BF	3500 bytes
SHA-256: `e49a868379cd3c37e631c5a53c010e21f38d803532a2b8417aee82315d4e8634`
`font_02_sfnt_off00009460.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9460	18840 bytes
SHA-256: `db65450964d7be290e65cdc2a92251ec8b560453bbe28e14c4f3d4713211f4b7`

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