PDF malware analysis — malicious · 1a2dfbf486c7e73e

MALICIOUS

PDF

40.7 KB Created: 2021-04-28 00:53:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12

MD5: c0ca2186c1e809ee60f7abe342702eee SHA-1: 0e0ed0aa47a8fdfdb937c24f50c1fc527179419b SHA-256: 1a2dfbf486c7e73e81e9f19440a0188963b75458919fb994b258b1b0e8e984d8

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to a malicious domain, masquerading as a "free generator" or "game hack" for Roblox. The document body explicitly contains a "CLICK HERE TO ACCESS ROBLOX GENERATOR" call to action, reinforcing the lure. The presence of these links and the lure strongly suggest an attempt to trick users into visiting malicious sites, likely for credential harvesting or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9941

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.xyz/app/431946152/usernames-and-passwords-hack-roblox-game-hack In PDF document text
- http://perpustakaan.idia.ac.id/repository/card-code-pw-free-roblox.pdfIn PDF document text
- http://perpustakaan.idia.ac.id/repository/how-to-get-robux-for-free-2021-no-hack.pdfIn PDF document text
- http://perpustakaan.idia.ac.id/repository/get-hacked-roblox-account-back.pdfIn PDF document text
- http://perpustakaan.idia.ac.id/repository/how-to-join-free-roblox-builders-club.pdfIn PDF document text
- http://perpustakaan.idia.ac.id/repository/roblox-bloxburf-money-hack.pdfIn PDF document text
- http://perpustakaan.idia.ac.id/repository/how-2-get-free-robux-2021.pdfIn PDF document text
- http://perpustakaan.idia.ac.id/repository/king-hack-roblox.pdfIn PDF document text
- http://perpustakaan.idia.ac.id/repository/roblox-natural-disaster-fly-hack.pdfIn PDF document text
- http://perpustakaan.idia.ac.id/repository/roblox-hacked-warning.pdfIn PDF document text
- http://perpustakaan.idia.ac.id/repository/free-roblox-vip-sever.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_off000040de.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x40DE	25096 bytes
SHA-256: `0cb1e460ecbaa3c139151f9f67204e482479a72a552663ad3aebe785d5a57254`
`font_01_sfnt_off00007aa9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7AA9	19120 bytes
SHA-256: `5d28886efee87598daedda7260587e54d19d761467d784617631ab3335a088dc`

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