Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2a88bd102810c22…

MALICIOUS

PDF

42.4 KB Created: 2021-05-16 22:43:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: a18f6effdaab6df596d9bdc72e91e836 SHA-1: e08da90deba7a2cb1d1025613ed8059610834c1f SHA-256: f2a88bd102810c22adbd219741e3fc45f5dfe8e044ff2be7efd6016a4a15e6b0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirector infrastructure, specifically promoting "Coin Master Hack" and "Robux" scams. The primary lure URL is https://netcdn.xyz/app/406889139/coin-master-hack-ios-cydia-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a malicious redirection workflow, likely intended to deliver further malware or phishing content to the user.

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/406889139/coin-master-hack-ios-cydia-game-hack In PDF document text
    • http://cmme.it/images/coin-master-hack-2021-without-human-verification_GM406889139.pdfIn PDF document text
    • http://cmme.it/images/coin-master-free-spins--spins_GM406889139.pdfIn PDF document text
    • http://cmme.it/images/easy-robux-today_GM431946152.pdfIn PDF document text
    • http://cmme.it/images/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • http://cmme.it/images/robux-com-free_GM431946152.pdfIn PDF document text
    • http://cmme.it/images/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • http://cmme.it/images/coin-master-hack-spin-ios_GM406889139.pdfIn PDF document text
    • http://cmme.it/images/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://cmme.it/images/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://cmme.it/images/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://cmme.it/images/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://cmme.it/images/minecraft-pe-apk_GM479516143.pdfIn PDF document text
    • http://cmme.it/images/free-links-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://cmme.it/images/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://cmme.it/images/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://cmme.it/images/free-minecraft-svg-cutting-files_GM479516143.pdfIn PDF document text
    • http://cmme.it/images/coin-master-free-pet-food_GM406889139.pdfIn PDF document text
    • http://cmme.it/images/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • http://cmme.it/images/free-spin-appscoin-master_GM406889139.pdfIn PDF document text
    • http://cmme.it/images/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049df.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49DF 25472 bytes
SHA-256: a5a339f4d45eb5f6db38a8c76d362b1e370e44ed3470308f6b543deb9e3b3b0a
font_01_sfnt_off000083b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83B8 18072 bytes
SHA-256: 2d204714e7ecc0ada3d20692b14752d7a228914fcb1cb1d03a14579bf96f2857

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