Malicious PDF — malware analysis report

Static analysis result for SHA-256 341935d2ca2d4a1c…

MALICIOUS

PDF

42.6 KB Created: 2021-05-16 01:04:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b3cfc99143f321670cf9276e420ac5b0 SHA-1: 38c25f83f9c7ad39941a01c602f1b692eaff9c0a SHA-256: 341935d2ca2d4a1ce49b8c00f6ce8818c7c6a8d4ac80b1a84c5fefd7e2a3cf90
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting "free Robux" or "game hacks" to lure users. The heuristic firings confirm these links point to known malicious redirectors and a game hack lure. While no scripts were extracted, the document's structure and embedded URLs strongly suggest a phishing or social engineering attempt to drive traffic to potentially malicious sites.

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/431946152/free-robux-only-username-game-hack In PDF document text
    • https://www.alu-as.cz/images/coin-master-admin-free-spins_GM406889139.pdfIn PDF document text
    • https://www.alu-as.cz/images/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • https://www.alu-as.cz/images/minecraft-bedrock-free-server-hosting_GM479516143.pdfIn PDF document text
    • https://www.alu-as.cz/images/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://www.alu-as.cz/images/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://www.alu-as.cz/images/free-spin-coin-master-instagram_GM406889139.pdfIn PDF document text
    • https://www.alu-as.cz/images/coin-master-hack-reddit_GM406889139.pdfIn PDF document text
    • https://www.alu-as.cz/images/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://www.alu-as.cz/images/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://www.alu-as.cz/images/coin-master-3533-android-hack_GM406889139.pdfIn PDF document text
    • https://www.alu-as.cz/images/free-spins-coin-master-2021-glitch_GM406889139.pdfIn PDF document text
    • https://www.alu-as.cz/images/coin-master-get-free-spins_GM406889139.pdfIn PDF document text
    • https://www.alu-as.cz/images/flip-master-free-coins_GM406889139.pdfIn PDF document text
    • https://www.alu-as.cz/images/hack-coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • https://www.alu-as.cz/images/get-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.alu-as.cz/images/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • https://www.alu-as.cz/images/get-me-free-robux_GM431946152.pdfIn PDF document text
    • https://www.alu-as.cz/images/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • https://www.alu-as.cz/images/free-coin-master-links_GM406889139.pdfIn PDF document text
    • https://www.alu-as.cz/images/free-minecraft-server-hosting_GM479516143.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.

FilenameKindSourceSize
font_00_sfnt_off000047de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47DE 25420 bytes
SHA-256: d05c89136f0a41b0ecdc68f4956001c9e99556434b7070e04f3bfe583fc016cc
font_01_sfnt_off00008214.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8214 18944 bytes
SHA-256: 70265b1ab56d97b784f4fe2fa404654962f548e46b6ffa550f521079ee450d9c

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