Malicious PDF — malware analysis report

Static analysis result for SHA-256 1914fc2bb03dce8c…

MALICIOUS

PDF

44.8 KB Created: 2021-05-16 17:00:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 5489b546780b344edbcab8815424d5a1 SHA-1: 9cf2e6b8fd6e01c11779ac5b4333a00239ddbc63 SHA-256: 1914fc2bb03dce8c27ad35a338b6d0ebf84a9dd59daf21f007579cdedfa0ed41
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, masquerading as "free generators" for popular games. The primary redirector URL is https://netcdn.xyz/app/406889139/free-coin-master-coins-and-spins-game-hack. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence suggest a malicious intent to redirect users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/free-coin-master-coins-and-spins-game-hack In PDF document text
    • http://miriammcconnonart.com/images/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://miriammcconnonart.com/images/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://miriammcconnonart.com/images/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://miriammcconnonart.com/images/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
    • http://miriammcconnonart.com/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://miriammcconnonart.com/images/how-to-get-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://miriammcconnonart.com/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://miriammcconnonart.com/images/free-roblox-templates_GM431946152.pdfIn PDF document text
    • http://miriammcconnonart.com/images/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://miriammcconnonart.com/images/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://miriammcconnonart.com/images/coin-master-hack-blogspot_GM406889139.pdfIn PDF document text
    • http://miriammcconnonart.com/images/minecraft-xbox-360-free-download-code_GM479516143.pdfIn PDF document text
    • http://miriammcconnonart.com/images/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://miriammcconnonart.com/images/roblox-microsoft-rewards_GM431946152.pdfIn PDF document text
    • http://miriammcconnonart.com/images/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://miriammcconnonart.com/images/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://miriammcconnonart.com/images/microsoft-rewards-roblox_GM431946152.pdfIn PDF document text
    • http://miriammcconnonart.com/images/withdraw-robux_GM431946152.pdfIn PDF document text
    • http://miriammcconnonart.com/images/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://miriammcconnonart.com/images/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b1b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B1B 24552 bytes
SHA-256: f0d9832fe1c67dcfe41637269bf822337883139c4f11fa1dc593ad89e91c774f
font_01_sfnt_off0000836b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x836B 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008d1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D1D 18060 bytes
SHA-256: 11bd500b33c169b65e53ecddb4cd7ac7428d9a9bdc32d60ba78f45c9260aee9d

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