Malicious PDF — malware analysis report

Static analysis result for SHA-256 49b4174f1ee76e4f…

MALICIOUS

PDF

43.4 KB Created: 2021-05-11 05:41:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f63f08933100bf88a500c2a6eb88461b SHA-1: 284f40945059712ba3bf150d23234da7b6f3a2a2 SHA-256: 49b4174f1ee76e4f03e82987339a08e908bf858e41894d82b7cbc2fde0564e0c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'free generator / game hack' lures. The ML classifier also strongly flagged this PDF as malicious. While no scripts were directly extracted, the embedded links and the nature of the lures suggest an attempt to drive users to malicious websites, likely for further malware delivery or phishing.

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/coin-master-free-spins-cheat-codes-game-hack In PDF document text
    • http://optiquedelavaunage.com/images/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/coin-master-free-spin-no-offers_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/coin-master-hack-spins-ios_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-robux-today_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/coinmaster-spin-ml_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/how-to-hack-coin-master-root_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-private-server-roblox_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/rbx-com_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/coin-master-hack-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/coin-master-hack-for-android_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-robux-that-actually-works-2021_GM431946152.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_off00004b36.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B36 27412 bytes
SHA-256: 46ae0eb7377489109ef3b5092f550a297a80ae08883752459d86cc1a14c6e288
font_01_sfnt_off0000879c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x879C 18224 bytes
SHA-256: 2b0c7a21f15b32e61833c84a6137fabd61f149f6731c9eb1b02707dfcd7d2dd9

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