Malicious PDF — malware analysis report

Static analysis result for SHA-256 903e1d9299f49a37…

MALICIOUS

PDF

42.0 KB Created: 2021-05-15 08:19:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 00e387d2fb0beea19a9a7dae6b70f69b SHA-1: 8b2d2d08f8c4f4055bd8a24acb0a765998d4f5bf SHA-256: 903e1d9299f49a371fd37fff9eee8ede54563d72a6af320c37a6f316ba28f116
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/is-minecraft-free-on-mac-game-hack PDF link annotation
    • http://iglesiashispanas.org/images/coin-master-hack-apk-with-fb-login-2021_GM406889139.pdfIn PDF document text
    • http://iglesiashispanas.org/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://iglesiashispanas.org/images/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://iglesiashispanas.org/images/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://iglesiashispanas.org/images/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • http://iglesiashispanas.org/images/how-can-you-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://iglesiashispanas.org/images/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://iglesiashispanas.org/images/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://iglesiashispanas.org/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://iglesiashispanas.org/images/free-robux-download_GM431946152.pdfIn PDF document text
    • http://iglesiashispanas.org/images/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
    • http://iglesiashispanas.org/images/hack-xp-net-generators-coin-master_GM406889139.pdfIn PDF document text
    • http://iglesiashispanas.org/images/hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://iglesiashispanas.org/images/free-roblox-items-codes_GM431946152.pdfIn PDF document text
    • http://iglesiashispanas.org/images/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://iglesiashispanas.org/images/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://iglesiashispanas.org/images/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • http://iglesiashispanas.org/images/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://iglesiashispanas.org/images/coin-master-on-facebook_GM406889139.pdfIn PDF document text
    • http://iglesiashispanas.org/images/free-online-spins-coin-master_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_off00004c4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C4A 24660 bytes
SHA-256: 62846a421dc00c12265dce35f58338c0da09753103bf6db321ba7f2c46c22446
font_01_sfnt_off000083e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83E5 17568 bytes
SHA-256: 70928c98edb580837fcbf0f9543b841edd11efdac6de6b6fcc7c93cea73d6057

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