PDF malware analysis — malicious · bd62ca412afa95b5

MALICIOUS

PDF

42.2 KB Created: 2021-05-13 12:37:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21

MD5: 78af396fd4b599e63058f90c80e6a205 SHA-1: 4924f8cb5811b1ff92b36b93b1c85a2ad6f19af1 SHA-256: bd62ca412afa95b56e6db2a07b5560968b5ada0db929c03e5813007b5a4b4e69

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and free currency lures. The primary redirect URL, https://netcdn.xyz/app/479516143/how-to-get-minecraft-for-free-on-android-device-game-hack, is flagged as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering tactic to drive users to potentially malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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/479516143/how-to-get-minecraft-for-free-on-android-device-game-hack In PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-coins-for-planet-master-game_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/coin-master-daily-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/robux-survey_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/levvvel-coin-master_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/robux-miner_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-group-roblox_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/minecraft-pe-hacks-ios_GM479516143.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-spins-coin-master-twitter_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/www-coinmaster-com_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-spins-coin-master-ios-2021_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-roblox-gfx_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/real-robux_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/how-do-you-get-free-robux-2021_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
`font_00_sfnt_off00004ab0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4AB0	24696 bytes
SHA-256: `50b9d54c3be90a29517d22e0e7f12f21676cb8e3505257560308dcce4cbea35a`
`font_01_sfnt_off00008275.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8275	18332 bytes
SHA-256: `f1b1885292fe7804ab1139a421bc8971dcdb5c33ccbea204e48355468ca4790a`

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