Malicious PDF — malware analysis report

Static analysis result for SHA-256 4256f1006952fd0a…

MALICIOUS

PDF

43.9 KB Created: 2021-05-19 09:10:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e45a7c590e0c34b1aa977e0067f22380 SHA-1: 031ffb063159ccefbf25efbb0e2d39f795ddb843 SHA-256: 4256f1006952fd0a7fcd53cc7fbae528cf993571ef20b3fd1f90f5b1b1404ebe
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to malicious redirectors, specifically advertising 'free generator / game hack' lures for popular games like Coin Master and Roblox. The document body and embedded URLs strongly suggest a phishing or scam attempt designed to trick users into visiting malicious sites. No scripts were extracted, but the presence of multiple malicious URLs and the lure content indicate a high likelihood of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/406889139/daily-coin-master-free-spin-link-game-hack In PDF document text
    • http://immo360grad.com/images/aimbot-download-roblox_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://immo360grad.com/images/minecraft-free-school_GM479516143.pdfIn PDF document text
    • http://immo360grad.com/images/free-25-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-hack-mod-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-rare-cards-hack_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-free-box_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/how-to-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/roblox-exploit-scripts_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/free-group-roblox_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/minecraft-pocket-edition-apk-free-download_GM479516143.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-free-coins-and-spins_GM406889139.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
stream_003_off00004bc3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BC3 26372 bytes
SHA-256: b335ff0d9616d6d832d3eb44d43d12272838dc399949d55cfe09fa6f724dcdd4
font_01_sfnt_off000088db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88DB 18476 bytes
SHA-256: 0e8ff706f766ebeac8fd51df3b46864e48e50accc558ba14dc70aa8347bf43ac

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