Malicious PDF — malware analysis report

Static analysis result for SHA-256 61f0d26aa01cc0df…

MALICIOUS

PDF

42.6 KB Created: 2021-05-13 11:01:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: ac2a897429cfaa7a223437a95bdd8856 SHA-1: db84dffc45ea45d27779d25864edde5d82303f24 SHA-256: 61f0d26aa01cc0df7a6e7ec656d352b0668d5bcc468f46ac23f16666082f1822
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is designed as a lure, employing a 'free generator' or 'game hack' theme to entice users. It contains numerous links to external PDF files hosted on `peche-madagascar.com`, creating a link farm for SEO manipulation and further redirection. The primary redirector URL identified is `https://netcdn.xyz/app/406889139/free-coin-master-spin-app-game-hack`, which is associated with malicious redirector infrastructure. The document's structure and content strongly suggest a phishing or scam campaign aimed at driving traffic to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/free-coin-master-spin-app-game-hack In PDF document text
    • http://peche-madagascar.com/images/coin-master-rare-cards-hack_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/how-to-get-free-coins-in-coin-master-game_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/coin-master-free-spins-fb_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/coin-master-34-4-hack-download_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/hack-de-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/free-coins-for-coin-master_GM406889139.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/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/113-hacked-client_GM479516143.pdfIn PDF document text
    • http://peche-madagascar.com/images/minecraft-java-account-free_GM479516143.pdfIn PDF document text
    • http://peche-madagascar.com/images/free-spin-and-coin-blogspot_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/free-role-in-coin-master_GM406889139.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/free-coins-and-spins-for-coin-master_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/coin-master-free-spins-2021-link_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_off00004caf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CAF 24988 bytes
SHA-256: 2e3ee1aa55a9a5329566298ad75a22915b26c210e8bde62b66be6c29f4118fe5
font_01_sfnt_off00008566.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8566 17884 bytes
SHA-256: 6a5fc0e5ee3990f98fff047e5d02c1443490e61ce795861dff478bab25fb071a

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