Malicious PDF — malware analysis report

Static analysis result for SHA-256 be1d8dfe067eeaac…

MALICIOUS

PDF

46.1 KB Created: 2021-06-11 12:52:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b9732381053493cc3f99bf6a303490db SHA-1: 6f09b2c16cc116d9c1e28d2eba5943a4639dff79 SHA-256: be1d8dfe067eeaac807f658d5d2a61d138f05a30cd9b1cd7902fbf62f30a6dba
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that lead to a known malicious redirector infrastructure, which in turn hosts further malicious PDFs. The document body and heuristics indicate a lure for game-related cheats or rewards, a common tactic for phishing or malware distribution. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/roblox-login-password-hack-game-hack In PDF document text
    • http://ofthalmiatrosthess.gr/images/roblox-apocalipse-rising-hack-dll_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/rewardex-robux_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/roblox-c9m_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/4-elements-tycoon-roblox-how-do-get-free-wrath-hammer_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/coin-master-free-card-link-today_GM406889139.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/coin-master-free-link-blogspot_GM406889139.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/how-to-get-coin-master-card-free_GM406889139.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/coin-master-apk-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/free-domain-for-minecraft-server_GM479516143.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/free-robux-generator-legit_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/robux-withdraw_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/robux-earner_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_004_off00005476.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5476 25436 bytes
SHA-256: 4e049c1c55504e2a9f7f74635234754ff6d67c8ce86ffab242c6c69e1f8f72f2
font_01_sfnt_off00008f33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F33 19080 bytes
SHA-256: 8ad4af85c2380c51582c57e0fe0e2b6f7c3a371a0921ddd7b74f3e66afd5cdf9

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