Malicious PDF — malware analysis report

Static analysis result for SHA-256 c736fcd673b60b22…

MALICIOUS

PDF

44.7 KB Created: 2021-05-14 02:30:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 94abbbce3a8aedde7142fad0c964de2b SHA-1: 588955c21502dd2553440053d0af5c4608b54ebc SHA-256: c736fcd673b60b229507b754bbce6427b4f3ebb86f80f097256b24dde638323b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting 'free generators' and 'game hacks' to entice users. The document body and embedded URLs reinforce this lure, aiming to trick users into visiting malicious sites. While no scripts were directly extracted, the PDF structure and heuristic firings strongly indicate a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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-exe-game-hack In PDF document text
    • http://federcaccianucleomagenta.it/images/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://federcaccianucleomagenta.it/images/minecraft-logo-maker-free_GM479516143.pdfIn PDF document text
    • http://federcaccianucleomagenta.it/images/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://federcaccianucleomagenta.it/images/coin-master-free-food_GM406889139.pdfIn PDF document text
    • http://federcaccianucleomagenta.it/images/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://federcaccianucleomagenta.it/images/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://federcaccianucleomagenta.it/images/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://federcaccianucleomagenta.it/images/hack-coin-master-apk-31_GM406889139.pdfIn PDF document text
    • http://federcaccianucleomagenta.it/images/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://federcaccianucleomagenta.it/images/robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://federcaccianucleomagenta.it/images/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • http://federcaccianucleomagenta.it/images/coin-master-free-account_GM406889139.pdfIn PDF document text
    • http://federcaccianucleomagenta.it/images/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • http://federcaccianucleomagenta.it/images/coin-master-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://federcaccianucleomagenta.it/images/martian-lettuce-coin-master-free_GM406889139.pdfIn PDF document text
    • http://federcaccianucleomagenta.it/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://federcaccianucleomagenta.it/images/get-robux-now_GM431946152.pdfIn PDF document text
    • http://federcaccianucleomagenta.it/images/free-vpn-for-minecraft_GM479516143.pdfIn PDF document text
    • http://federcaccianucleomagenta.it/images/coin-master-hack-tool-without-verification_GM406889139.pdfIn PDF document text
    • http://federcaccianucleomagenta.it/images/coin-master-jackpot-hack_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_003_off000048f1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48F1 25132 bytes
SHA-256: b61ece7081040b66252ad717f17c743eab8049ac86bd9e33928ab59ab65d2dc7
font_01_sfnt_off00008333.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8333 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off00008ce2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CE2 18012 bytes
SHA-256: 1e3fda203f08fe42ab00f6cef97e605bb68f7e374108f28afe3c353055d0c9d6

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