Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f4795cf2d8af0e5…

MALICIOUS

PDF

41.0 KB Created: 2021-05-19 00:08:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 553c4cb0a7bf3b71f0720f8ced8c99b2 SHA-1: 0fbdab7edeffd29eca0824b5fb68d78d0db4dc71 SHA-256: 8f4795cf2d8af0e58e51590ebe5eadacb99d022d1b65885c0cbf3a672252785f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector pointing to a "coin master hack" lure. The document body and embedded links suggest a social engineering attempt to trick users into visiting potentially harmful websites, likely for credential harvesting or malware distribution. No scripts were extracted, but the presence of multiple links to game-related "hacks" and generators indicates a phishing or scam campaign.

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-spin-160-pro-game-hack In PDF document text
    • http://www.hlad.hr/files/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/how-to-get-minecraft-for-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://www.hlad.hr/files/robux-free-c_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://www.hlad.hr/files/hack-coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/hack-coin-pro-coin-master_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-hack-tool-india_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/krnl-download_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-golden-cards-hack_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-hack-online-pc_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • http://www.hlad.hr/files/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/minecraft-hacked-apk_GM479516143.pdfIn PDF document text
    • http://www.hlad.hr/files/complete-offers-for-robux_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/free-robux-no-verify-2021_GM431946152.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_off00004655.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4655 24188 bytes
SHA-256: 293f00ca8259399bd27f12fbc9c75afd7da83b91e340a227e42ade3988682bca
font_01_sfnt_off00007d1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D1C 18492 bytes
SHA-256: 3c129696237f8a4998e60350049cab20723f357d88a2f9c142381212d91e6ef9

Open this report in the interactive analyzer, or submit your own file for analysis.