Malicious PDF — malware analysis report

Static analysis result for SHA-256 c32017e07710b4e5…

MALICIOUS

PDF

43.1 KB Created: 2021-06-03 07:26:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 4927f6351027c504b42e0d3b7748084f SHA-1: 130627d5c959322edfb8af9cec54149588d1e2f6 SHA-256: c32017e07710b4e5b7a8817e35b1635f7faba06eb624d16ef0231a150bb88187
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to a 'Coin Master Hack' lure, indicating a phishing or scam attempt. The presence of a visual download button further supports the lure's intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious intent to trick users into visiting potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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.online/app/406889139/coin-master-hack-with-facebook-login-game-hack In PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-pics_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/hack-avatar_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-images-free_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/toolbox-apk_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-minecraft-texture-packs-java_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-old-avatar_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-creative-mode-free_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-link_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-exe_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/gain-robux_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_off00004d19.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D19 24316 bytes
SHA-256: b60d74d1709bc0c24a44e196c27c7a56979cb1ea2ebb1129a1dfae9a6bf33495
font_01_sfnt_off00008490.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8490 18688 bytes
SHA-256: 749705fc09f79508956169531e0f53da1cf92baf18e5ef239c7c9518cbf3631e

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