Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4a9230b9d86435c…

MALICIOUS

PDF

34.3 KB Created: 2021-06-19 21:03:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 3500f0ed93ffc7643e05334652dd83ae SHA-1: 567a736bba8a218e03acbdb381945dde330ecb66 SHA-256: e4a9230b9d86435cc178e826a6f1f11d30ae6d53c751f2c426ae43d7178f3c0d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, http://netcdn.co/app/431946152/pro-tv-robux-hack-game-hack, disguised as game hacks and generators. The presence of these links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful websites. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/pro-tv-robux-hack-game-hack In PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-noclip-in-roblox-cheat-engine-67-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/como-hackear-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/pokemon-go-free-rare-candy_GM1094591345.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-use-wurst_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-free-superhero-body_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/daily-coin-master-link_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/exe-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-pet-snacks-coin-master_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-top_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-a-free-unicorn-in-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/hack-coin-master-game-apk-download_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/online-coin-master-hack-here_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-apk-hack-mod-download_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-coin-master-spins-link_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_off00002ef2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EF2 22392 bytes
SHA-256: 8996284aeac1dcaf1e1c0a52b4a6f4f5e977e86cdacae187ac4f40d03d306dfc
font_01_sfnt_off0000612e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x612E 18992 bytes
SHA-256: 7d8a5fd42c7ff0a249807baa9e1c897c331eaaccb43060aa7213209a43790cda

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