Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e5287ecbeb88997…

MALICIOUS

PDF

42.1 KB Created: 2021-05-16 04:07:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 39589ec7ef2c33506542ac99f3650570 SHA-1: c303897afdc18474ab5b058d821574dbb3adc269 SHA-256: 8e5287ecbeb8899749b33072fd802cc17e4236d2bde08c38f9842f6ed3528904
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically advertising free game hacks and generators. The primary malicious link identified is https://netcdn.xyz/app/479516143/free-24-7-minecraft-server-game-hack. The document's content and structure strongly suggest a phishing or scam attempt, likely to deliver a secondary payload or lead the user to a credential harvesting page.

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/free-24-7-minecraft-server-game-hack In PDF document text
    • http://www.hlad.hr/files/minecraft-jar-free_GM479516143.pdfIn PDF document text
    • http://www.hlad.hr/files/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-free-spins-and-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/roblox-free-play_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-free-spins-links-app_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • http://www.hlad.hr/files/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/free-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/hack-to-send-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/how-to-get-free-spins-on-coin-master-2021_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_off00004b0e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B0E 24928 bytes
SHA-256: 0128eaa0c0b6dd79ce3cd72761b84986ac64028dfefa57970927f7c8e24ae432
font_01_sfnt_off00008357.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8357 17924 bytes
SHA-256: 6d441e79e96f2496e7d363a8fd4eac2c27151cb1acb88a4e303d16644f1cdf17

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