Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9ce69dae86ef43e…

MALICIOUS

PDF

48.7 KB Created: 2021-06-10 21:48:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 34c8bc599e45d1e6989f9f63d0f1c82d SHA-1: c1f203fd728dc6dbabc6b03e5cf47a5d18f3d135 SHA-256: b9ce69dae86ef43e75e1224b581b6cd6bfd2bf1166941def1f87f72249340d21
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a 'free generator / game hack' lure, specifically mentioning Roblox. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or social engineering attack aimed at driving traffic to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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-hack-account-generator-game-hack In PDF document text
    • https://ogm-goettingen.de/images/coin-master-free-spins-no-survey_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-hack-xyz-apk-download_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/master-coin-hack-mod_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/real-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • https://ogm-goettingen.de/images/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • https://ogm-goettingen.de/images/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/link-coin-master_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/real-working-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • https://ogm-goettingen.de/images/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004f27.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F27 27564 bytes
SHA-256: 01d2aac534d2590eeb271bb93b1378882ef7d451530240bb626a82cbaeb8210d
font_01_sfnt_off00008e78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E78 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off00009b20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B20 18428 bytes
SHA-256: c88c44aad146b39e95e262b27a4e1839e7f9083e2faeedf7659ab3ab6c3aee4b

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