Malicious PDF — malware analysis report

Static analysis result for SHA-256 a81212fc4ab623e3…

MALICIOUS

PDF

37.5 KB Created: 2021-05-20 20:18:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 08e0b39bd6fedaa88688a21743c13ede SHA-1: 4680318338a7f0a5c8f419f6f119a17ba683a4ba SHA-256: a81212fc4ab623e3c8caf1f30cb444f7b468e3366f68d98444c61412531f7a62
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 0.9447

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/479516143/minecraft-pe-hacks-2021-game-hack PDF link annotation
    • http://cdescolapios.org/images/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://cdescolapios.org/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://cdescolapios.org/images/how-to-get-free-roblox-hair_GM431946152.pdfIn PDF document text
    • http://cdescolapios.org/images/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://cdescolapios.org/images/do-you-get-minecraft-windows-10-for-free_GM479516143.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_off00003569.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3569 27304 bytes
SHA-256: 30ac8f2fc79b12f94310361e2d3e5070fe085e213ac1c8dcdc68314bf5f76930
font_01_sfnt_off000071a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71A5 18296 bytes
SHA-256: 928fda8d6cdf740c8aa958f6e9db818f0cdae9318cc1084247adea2ad4ad4e6f

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