Malicious PDF — malware analysis report

Static analysis result for SHA-256 63013bae9c7981ba…

MALICIOUS

PDF

34.1 KB Created: 2021-06-28 06:01:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: fef68c8749d41fb09a981399e6b14db3 SHA-1: 0a7b7c02f35c7e5c44e929f46a7f8ff492cc39c9 SHA-256: 63013bae9c7981ba4363d827e41f6b75dbb82a7e218eb9408d71694b732358ee
142 Risk Score

Malware Insights

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

The PDF document contains numerous links, identified as a link farm, that lure users with promises of free game hacks and currency. The primary URL, http://netcdn.co/app/431946152/free-roblox-without-download-game-hack, is presented as a direct download or generator for Roblox hacks. The extensive list of similar URLs suggests a campaign to drive traffic to potentially malicious sites or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/free-roblox-without-download-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id/repository/roblox-hacks-for-apocalypse-rising_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-coins-app_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-how-to-hack-other-peoples-accounts_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-fan-page-facebook_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-and-chips_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/hack-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-counter-blox-roblox-offensive-hack-download_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-get-daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-exploit-free-executor-2021-september_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/robloxcom-free-hacks_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-cheat-engine-and-ccv5-bypass_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D38 21832 bytes
SHA-256: 4f1a34347c59125d244da0a215426dea9128a2ed6f41b254a97b0a0e8100d94a
font_01_sfnt_off00005d86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D86 19884 bytes
SHA-256: 376c568da7c324f65eb80f7fc88b4510a53b4678baf752bb1c0e8aeb548d3070

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