Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f3014f77f0be27a…

MALICIOUS

PDF

44.4 KB Created: 2021-05-15 09:01:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 8c42594692a9cd3a289d7ebf9b12e883 SHA-1: 40c6f5912f057d3da78a9bd991621b7852b9a884 SHA-256: 9f3014f77f0be27a23fa547052c6502946e975068335a13af3a81920f010d869
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, including a known malicious redirector, under the guise of providing game hacks and free currency. The document body and embedded URLs strongly suggest a phishing or scam attempt to lure users to potentially malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of malicious redirection, likely leading to further malware or phishing content.

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 https://netcdn.xyz/app/406889139/coin-master-hack-apk-download-for-android-mobile-game-hack In PDF document text
    • http://peche-madagascar.com/images/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • http://peche-madagascar.com/images/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/easy-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/earn-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/free-roblox-toy-codes-2021_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • http://peche-madagascar.com/images/150-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/mangocheats-com-hack-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • http://peche-madagascar.com/images/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/how-to-hack-coin-master-with-root_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_off00004a5e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A5E 30152 bytes
SHA-256: 4210ceb0b7150bca81863da1f5199c15be338288b971d7593790b7a57fd8305a
font_01_sfnt_off000089d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89D5 18792 bytes
SHA-256: 9b8c4ac4c9b43c558f32175e9106326f8ee670f1239155596fca266ca3d28f0b

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