Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd5faab361d4561b…

MALICIOUS

PDF

34.8 KB Created: 2021-07-03 13:42:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3231a68348a1d69bcbcd1407cc4fc638 SHA-1: aedb23dbfa7946bab037e53166b14bcd62e66eda SHA-256: fd5faab361d4561b1cdb62919de598f2b31ed4390b259cab6e78221ecb46b787
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, leading to a 'game hack' lure. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the document's structure and links strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/479516143/minecraft-bedrock-hacks-windows-10-game-hack In PDF document text
    • https://elearning.mtsn5bojonegoro.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn5bojonegoro.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn5bojonegoro.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn5bojonegoro.sch.id/__statics/gudangsoal/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn5bojonegoro.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-without-verification_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn5bojonegoro.sch.id/__statics/gudangsoal/files/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn5bojonegoro.sch.id/__statics/gudangsoal/files/roblox-how-to-get-the-circuit-breaker-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn5bojonegoro.sch.id/__statics/gudangsoal/files/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn5bojonegoro.sch.id/__statics/gudangsoal/files/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn5bojonegoro.sch.id/__statics/gudangsoal/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn5bojonegoro.sch.id/__statics/gudangsoal/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn5bojonegoro.sch.id/__statics/gudangsoal/files/how-to-get-a-free-robux-code_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn5bojonegoro.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn5bojonegoro.sch.id/__statics/gudangsoal/files/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn5bojonegoro.sch.id/__statics/gudangsoal/files/coin-master-50-spin-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn5bojonegoro.sch.id/__statics/gudangsoal/files/coin-master-free_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn5bojonegoro.sch.id/__statics/gudangsoal/files/how-to-find-hacks-in-horrorbreak-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn5bojonegoro.sch.id/__statics/gudangsoal/files/coin-master-32-hack-apk_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn5bojonegoro.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn5bojonegoro.sch.id/__statics/gudangsoal/files/free-spins-generated-from-coin-master_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_002_off000032d4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32D4 21704 bytes
SHA-256: 1fb168e2354f0ab713fc15f1cf7be12494cc09926dcce4e28d0ac6260a91b147
font_01_sfnt_off00006257.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6257 19200 bytes
SHA-256: 92ba4d9be554fb736b9e7b1235b09796ba3046a264d1052683216498d49e4302

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