PDF malware analysis — malicious · 42c8d94e5c1804dc

MALICIOUS

PDF

34.9 KB Created: 2021-07-01 08:58:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: d4ec3666d5b2c0d8f45fd504e9fa0c4a SHA-1: 79714109a0f51fb9886c1d626c66769dc04bab17 SHA-256: 42c8d94e5c1804dcfae5323e2140b822d5eb6b21e4a26c33e83c107340c6a29f

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains embedded links and text that promote 'free game hacks' and 'free currency', which is a common lure for phishing and malware distribution. The primary link directs to a known malicious redirector infrastructure, indicating a high likelihood of further malicious activity. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a phishing or malware delivery attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/free-admin-hack-download-roblox-game-hack In PDF document text
- https://www.corporateprofessionals.com/uploaded_files/userfiles/files/free-robux-co_GM431946152.pdfIn PDF document text
- https://www.corporateprofessionals.com/uploaded_files/userfiles/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
- https://www.corporateprofessionals.com/uploaded_files/userfiles/files/cone-master_GM406889139.pdfIn PDF document text
- https://www.corporateprofessionals.com/uploaded_files/userfiles/files/minecraft-online-free-download_GM479516143.pdfIn PDF document text
- https://www.corporateprofessionals.com/uploaded_files/userfiles/files/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.corporateprofessionals.com/uploaded_files/userfiles/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.corporateprofessionals.com/uploaded_files/userfiles/files/minecraft-free-ios-no-verification_GM479516143.pdfIn PDF document text
- https://www.corporateprofessionals.com/uploaded_files/userfiles/files/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
- https://www.corporateprofessionals.com/uploaded_files/userfiles/files/coin-master-hack-download-android_GM406889139.pdfIn PDF document text
- https://www.corporateprofessionals.com/uploaded_files/userfiles/files/roblox-mm2-coin-hack-2021_GM431946152.pdfIn PDF document text
- https://www.corporateprofessionals.com/uploaded_files/userfiles/files/robux-free-gift-card-org_GM431946152.pdfIn PDF document text
- https://www.corporateprofessionals.com/uploaded_files/userfiles/files/free-tiktok-accounts_GM835599320.pdfIn PDF document text
- https://www.corporateprofessionals.com/uploaded_files/userfiles/files/avoir-pleins-dhabit-dans-roblox-sans-hack_GM431946152.pdfIn PDF document text
- https://www.corporateprofessionals.com/uploaded_files/userfiles/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
- https://www.corporateprofessionals.com/uploaded_files/userfiles/files/hack-elemental-battlegrounds-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.corporateprofessionals.com/uploaded_files/userfiles/files/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
- https://www.corporateprofessionals.com/uploaded_files/userfiles/files/can-roblox-hack-your-phone_GM431946152.pdfIn PDF document text
- https://www.corporateprofessionals.com/uploaded_files/userfiles/files/coin-master-today_GM406889139.pdfIn PDF document text
- https://www.corporateprofessionals.com/uploaded_files/userfiles/files/free-card-link-coin-master_GM406889139.pdfIn PDF document text
- https://www.corporateprofessionals.com/uploaded_files/userfiles/files/coin-master-free-coin-and-spin-app_GM406889139.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_off000030a8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x30A8	22524 bytes
SHA-256: `cedbd0082cf078e79167ea25ab451af27c03c5f6059f0c4e7ddc58a445b138a3`
`font_01_sfnt_off000061bb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61BB	19708 bytes
SHA-256: `b66dbe744517ddf2230898e44a2faeb1d39c64ac39adffb7c9fcfe27f1987ca9`

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