Malicious PDF — malware analysis report

Static analysis result for SHA-256 358fdb60cf25e275…

MALICIOUS

PDF

49.8 KB Created: 2021-06-03 05:39:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 400cd0707a3200f2aeda21977038b143 SHA-1: f6af62ffb676f9d3fd071c96b29b3db74e829654 SHA-256: 358fdb60cf25e275ed59ed32173d4e58057acf387eb90a3463435bd53b4c5d4a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or scam attempt. The embedded URLs, such as 'https://netcdn.online/app/431946152/promo-codes-for-free-robux-game-hack', are designed to lead users to potentially harmful content or further malicious sites. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.online/app/431946152/promo-codes-for-free-robux-game-hack In PDF document text
    • http://www.valenciamaids.com/userfiles/files/get-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-roblox-injector_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/hack-coin-master-apk-32_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/cheats-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-coin-master-coins-2021_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/como-hackear-el-juego-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-free-spins-fb-champion_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-roblox-hair-codes_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/robux-premium_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-hack-to-get-free-spins_GM406889139.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_004_off0000563d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x563D 27608 bytes
SHA-256: d6f89ac846b24304e09d97bfccb123e5bc58450c3bb3483b069a75b17d826b1b
font_01_sfnt_off00009555.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9555 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00009f40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F40 18604 bytes
SHA-256: 79f1ed749ebb86ed8378b1cb9aa6f559fb500c5101e3810faa0ee40136890037

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