Malicious PDF — malware analysis report

Static analysis result for SHA-256 757b8f1c41bdfa4e…

MALICIOUS

PDF

42.3 KB Created: 2021-05-16 02:08:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: d88d97d53200ada155a947822ef8f19f SHA-1: 895f91c98490960bad1e7c4c14457281813fda12 SHA-256: 757b8f1c41bdfa4e0a30d11a55ff11414953e330207716d8d6b97848d7a7d2f0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains multiple links to known malicious redirectors, specifically advertising 'robux hack no verification' and similar game-related lures. The ML classifier strongly flagged this PDF as malicious. The embedded URLs and the nature of the lures suggest an attempt to trick users into downloading potentially harmful content, likely through a phishing or social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/431946152/robux-hack-no-verification-game-hack In PDF document text
    • http://peche-madagascar.com/images/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • http://peche-madagascar.com/images/coin-and-spin_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/free-cracked-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://peche-madagascar.com/images/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://peche-madagascar.com/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/coin-master-hack-apk-download-for-android-mobile_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/free-star-codes-roblox_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/coin-master-free-spins-2021-link_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/hack-robux_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/more-robux_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/how-to-duplicate-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/try-minecraft-free_GM479516143.pdfIn PDF document text
    • http://peche-madagascar.com/images/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/free-robux-no-download_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
font_00_sfnt_off00004962.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4962 24848 bytes
SHA-256: 15d330e019815d128b07c2857e7e1319f048486f9520991117caf50c17287a61
font_01_sfnt_off000081ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81EC 18604 bytes
SHA-256: 770f8f6a3c3ea9ac3c319881d9f8005aae44889e6d1fc0dc42f8814bbcec8619

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