Malicious PDF — malware analysis report

Static analysis result for SHA-256 307143e590dcf03f…

MALICIOUS

PDF

39.5 KB Created: 2021-05-21 12:06:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e80b36d33db65bded680c95636924c53 SHA-1: 64132d3d8dfb78ed31ebf1d370c8d97dc517e4a8 SHA-256: 307143e590dcf03ffa79cd52f6ec907821dab02bab0880bbb8b73f502bca7d0e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that are flagged as malicious redirectors, specifically advertising 'game hacks' and 'free generators'. The document body, though partially corrupted, contains references to 'Roblox Script Hack' and a URL associated with such content. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest a lure to a malicious site designed to trick users into downloading further malware or engaging in scams.

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-script-hack-game-hack In PDF document text
    • https://elearning.mtsalmanar.com/__statics/gudangsoal/files/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmanar.com/__statics/gudangsoal/files/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsalmanar.com/__statics/gudangsoal/files/change-roblox-username-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmanar.com/__statics/gudangsoal/files/get-2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalmanar.com/__statics/gudangsoal/files/roblox-free-robux-no-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_off0000326a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x326A 26172 bytes
SHA-256: 96fc2a06e1ae15d6fa39c72be45b2244a2305b593a99e6a7d33ce53695de2436
font_01_sfnt_off00006e4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E4D 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off000077fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77FE 18580 bytes
SHA-256: c1944f3c26fd870ce0e5de863125d21882df0ce96ba9356e52db8af51b5248a2

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