Malicious PDF — malware analysis report

Static analysis result for SHA-256 988a56945d626115…

MALICIOUS

PDF

38.0 KB Created: 2021-05-21 22:15:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 57d58f3de1cc8186672dfcd45d6ee243 SHA-1: 698c037f222e3fa1dfc42609dbb1e9522c23d818 SHA-256: 988a56945d62611522828e8902610138418a301bdc222892b6f18fec841030cc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file 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 0.9407

Heuristics 4

  • 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/431946152/roblox-free-executor-game-hack PDF link annotation
    • http://bvmg.nl/images/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://bvmg.nl/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://bvmg.nl/images/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • http://bvmg.nl/images/mcpe-master-coins-hack-download_GM406889139.pdfIn PDF document text
    • http://bvmg.nl/images/free-robux_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
stream_002_off000032c8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32C8 28176 bytes
SHA-256: 62b0666f77bfaf1d3c84f0689241ee4d0b0b329d9a846282bfd89f850ab094b6
font_01_sfnt_off000073c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73C1 18192 bytes
SHA-256: 7ba247a64e9cc24d80440ed01eefe46d1337aad9cec78f28e7b2b5b32c9414c4

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