Malicious PDF — malware analysis report

Static analysis result for SHA-256 688ceb29062a26be…

MALICIOUS

PDF

41.3 KB Created: 2021-05-16 14:47:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b5669afb551d911f14bc10db5167cf04 SHA-1: a54dcffc4a3a8983b4e3b95335b3fb5afae5a889 SHA-256: 688ceb29062a26be29c8e25d46d7f5da4d935d67fb8497b9f0e20b0424a28ff5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as "free generator" or "game hack" lures. The ML classifier also flagged this PDF as malicious with high confidence. The embedded URLs suggest a phishing or scam campaign, likely aiming to trick users into downloading further malware or revealing sensitive information.

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/479516143/minecraft-beta-free-game-hack In PDF document text
    • http://alpen-seeblick.at/images/coin-master-key-free-spin_GM406889139.pdfIn PDF document text
    • http://alpen-seeblick.at/images/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://alpen-seeblick.at/images/coinmasterdailyfreespins-com_GM406889139.pdfIn PDF document text
    • http://alpen-seeblick.at/images/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://alpen-seeblick.at/images/robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://alpen-seeblick.at/images/is-roblox-free-on-xbox_GM431946152.pdfIn PDF document text
    • http://alpen-seeblick.at/images/robux-scam_GM431946152.pdfIn PDF document text
    • http://alpen-seeblick.at/images/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://alpen-seeblick.at/images/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://alpen-seeblick.at/images/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://alpen-seeblick.at/images/websites-for-robux_GM431946152.pdfIn PDF document text
    • http://alpen-seeblick.at/images/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://alpen-seeblick.at/images/coin-master-games-download-free_GM406889139.pdfIn PDF document text
    • http://alpen-seeblick.at/images/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://alpen-seeblick.at/images/coin-master-free-spin-daily-bonus_GM406889139.pdfIn PDF document text
    • http://alpen-seeblick.at/images/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://alpen-seeblick.at/images/coin-master-support_GM406889139.pdfIn PDF document text
    • http://alpen-seeblick.at/images/coin-master-hack-uk_GM406889139.pdfIn PDF document text
    • http://alpen-seeblick.at/images/coin-master-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://alpen-seeblick.at/images/coin-master-hacks-for-gold-cards_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_off0000490c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x490C 24740 bytes
SHA-256: 280c3b515a7f0a9b4c29a8fed876f8043681a1d083941f12f6951e8d316a3533
font_01_sfnt_off000080c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80C2 17784 bytes
SHA-256: ffa4e944bc3952cb658e805fb11da1f643d70f63a75572cc293d8aa9f3ac184d

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