Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0a4549dcb1f5539…

MALICIOUS

PDF

39.0 KB Created: 2021-05-20 13:35:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4e4f63cf1beaca177fee2180ececf890 SHA-1: 7689dd3be2bcd955bfb52c58a83e44893a832853 SHA-256: c0a4549dcb1f55398e85c79a34d0933c2afbe4b1ed6937732fd918a04bdc65e8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links and a call-to-action phrase designed to trick users into believing they can obtain game-related cheats or currency. These links redirect to known malicious infrastructure, indicating a phishing or scam attempt. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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/roblox-fly-hack-game-hack In PDF document text
    • http://elibrary.fl.unud.ac.id/repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/freecoins_GM406889139.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/get-free-robux-without-human-verification_GM431946152.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.

FilenameKindSourceSize
stream_002_off0000316e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x316E 26852 bytes
SHA-256: 703f169905bc254c29089a4262917073bac86c6381d9725d1860aa9d0504a360
font_01_sfnt_off00006c55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C55 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off0000763f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x763F 18528 bytes
SHA-256: 48aa5298b09ebe1486756ea90f1095ff6b224374f32c9ff4b9ed1390be9ca915

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