Malicious PDF — malware analysis report

Static analysis result for SHA-256 384153fed82455aa…

MALICIOUS

PDF

35.9 KB Created: 2021-07-03 14:32:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 703e6205cc5ade09556d71822c142be3 SHA-1: ebe47590c4fbb522bbe94ca48d6cfd4721d414aa SHA-256: 384153fed82455aa97ae399c1cc52f9bff896fbee48905052da2c64f66fc956e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious websites, masquerading as game hacks and generators. The primary lure appears to be related to 'Coin Master' and 'Roblox' related cheats. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

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.tw/app/406889139/coin-master-free-soins-game-hack In PDF document text
    • http://lib.akpnbahtera.ac.id/repository/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-coin-master-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/how-to-play-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-minecraft-printables-food-labels_GM479516143.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/how-to-give-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/hack-the-plaza-roblox_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/www-robux-us_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/robux-adder_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/earn-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/tiktok-free-like-website_GM835599320.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/roblox-bear-cheats_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/tiktok-free-advertising_GM835599320.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/paginas-para-hackear-usuarios-en-roblox_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
font_00_sfnt_off0000376c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x376C 22892 bytes
SHA-256: 34095d79f7d8365afd4fda6f50eeec6a6258bb1547b340c081990a6d324d41da
font_01_sfnt_off00006acb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ACB 17996 bytes
SHA-256: f4306de497449c0c0250de5deec7b8066a87c54091f9de3abe5accc399ec3ddb

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