Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f92bbae6af42e70…

MALICIOUS

PDF

42.0 KB Created: 2021-05-16 17:31:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6f96d3058afdc5bff94b5503179ab01f SHA-1: 0dca872cb54f148b3eb28b83f49e67bbbbe949e9 SHA-256: 1f92bbae6af42e707b09bacefe7857df81bbae4dd8b43c6c6c24760b94d0e56b
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that lead to known malicious redirectors, specifically targeting users with lures for game hacks and free currency. The document body and extracted URLs reinforce this lure, aiming to entice users to click through to potentially malicious sites. While no scripts were directly extracted, the PDF structure itself facilitates the redirection, likely leading to a second-stage download or phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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-no-verification-game-hack In PDF document text
    • http://immo360grad.com/images/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/i-need-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/mcpe-master-coins-hack-download_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-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/free-spins-coin-master-october-17-2021_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/como-hackear-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/free-spins-coin-master-apple_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-daily-free-link_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/fb-coin-master_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/minecraft-pe-016-0-apk-download-free_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
stream_003_off00004693.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4693 25088 bytes
SHA-256: c2496b370f08c44ec4a5527d6ac9c85387d94b7038ede0c53254e26e23092925
font_01_sfnt_off00008098.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8098 18600 bytes
SHA-256: 361892a278de990f6dfe9fe9f512a0ec39aeba1740037781b92f32c6ad2b5051

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