Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6d2228c6d6ba019…

MALICIOUS

PDF

44.2 KB Created: 2021-05-13 19:47:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 6571d871ce68da8cb0186e5abbc43fdf SHA-1: 0009da453cb7af976a9dec87f2d95e4f3580bed8 SHA-256: b6d2228c6d6ba019d8676d37158062348dea0895cc4812d5ba9e2348f719cabd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appears to be a "free generator / game hack". The primary link redirects to malicious infrastructure, indicating a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to potentially harmful sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/479516143/minecraft-education-free-game-hack In PDF document text
    • http://www.actae.gr/images/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.actae.gr/images/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://www.actae.gr/images/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.actae.gr/images/free-robux-no-password_GM431946152.pdfIn PDF document text
    • http://www.actae.gr/images/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://www.actae.gr/images/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.actae.gr/images/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://www.actae.gr/images/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • http://www.actae.gr/images/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
    • http://www.actae.gr/images/hack-client_GM479516143.pdfIn PDF document text
    • http://www.actae.gr/images/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • http://www.actae.gr/images/omplete-surveys-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.actae.gr/images/minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://www.actae.gr/images/appsmobinfo-coinmasterhack-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.actae.gr/images/free-robux-link_GM431946152.pdfIn PDF document text
    • http://www.actae.gr/images/coin-master-apk-hack-32_GM406889139.pdfIn PDF document text
    • http://www.actae.gr/images/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.actae.gr/images/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.actae.gr/images/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://www.actae.gr/images/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a10.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A10 24232 bytes
SHA-256: 141608cad52a050bc0a5977822a46da59c735ff8299621153915f8b0ab352177
font_01_sfnt_off0000816e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x816E 2820 bytes
SHA-256: 96a70491b0783ad8c6fc9b11a18f021aa22c69ac41ee4499b781d16a1b99b689
font_02_sfnt_off00008b0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B0F 18024 bytes
SHA-256: 50b2d5ff22f0b3ffa840834f12cbec9953eabd3c4e347b5eb6eb3aff22325aed

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