Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6d2e07bb48bc68f…

MALICIOUS

PDF

42.6 KB Created: 2021-05-14 00:43:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 190c93aab47cf6605f99b8b68d608525 SHA-1: 5f44600e2432d5fe080929c2946609853e8568cd SHA-256: e6d2e07bb48bc68f4938caf86e1f43579a5886c12de72cf73bd35d6c032373b9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting 'free generators' or 'game hacks'. The ML classifier strongly flagged this PDF as malicious. The embedded URLs and the lure text suggest an attempt to trick users into visiting potentially harmful sites, likely for credential harvesting or further malware delivery.

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-realistic-minecraft-texture-packs-game-hack In PDF document text
    • http://www.centralbarbershop.ru/images/coin-master-hack-lost-world-2021-com_GM406889139.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/coin-mster-free_GM406889139.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/win-free-robux_GM431946152.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/how-to-get-free-spins-on-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/extra-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/roblox-www-com_GM431946152.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/is-coin-master-free_GM406889139.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/fast-robux-online_GM431946152.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/code-free-robux_GM431946152.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/20210-free-spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/moonactive-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/coin-master-game-hacking-tricks_GM406889139.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • http://www.centralbarbershop.ru/images/coin-master-daily-free-spins-link-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_off00004bc1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BC1 24824 bytes
SHA-256: 3e901ef4970fb33766086a8efcb248e8c346e99226841c3b7ccd79f7440d7bac
font_01_sfnt_off00008435.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8435 18316 bytes
SHA-256: 3f7dc9828bb789f2f60f74f5e4523efa991fc74e7e634ca87946bd7b638634b9

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