Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ed2ee37dce6be32…

MALICIOUS

PDF

42.5 KB Created: 2021-05-13 18:09:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 655cb02dae4a3ec2882d693325281cef SHA-1: f2258f7d47e762081c49943302cd0b5f6347eb97 SHA-256: 5ed2ee37dce6be3205354650cb3a9166e1241358b41b6c0a4f2ce1363aad43ed
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors, masquerading as game hacks and free downloads. The primary lure URL is https://netcdn.xyz/app/479516143/minecraft-education-edition-free-download-game-hack, which is associated with a critical heuristic firing for malicious redirector infrastructure. The document body, though partially corrupted, contains references to game hacks and the malicious URL, reinforcing the lure. The ML classifier also strongly flagged this PDF as malicious.

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/479516143/minecraft-education-edition-free-download-game-hack In PDF document text
    • http://mbbs.hr/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-online-free-spin_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-game-android-free-download_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/roblox-games-to-play-for-free_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
    • http://mbbs.hr/files/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • https://mbbs.hr/files/how-to-get-more-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/free-roblox-svg_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-daily-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-hack-version-2021-free-download_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
font_00_sfnt_off00004b85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B85 24532 bytes
SHA-256: 780d7438215bda59b46d14cf67ac408b3febb77c817d8e730fe5674465368ffe
font_01_sfnt_off0000836b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x836B 18428 bytes
SHA-256: 3a678da037c633a6a13339b3c5a4bd8322cea022da4d3ccfe017faaa6041de20

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