Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a41bb6f24446867…

MALICIOUS

PDF

33.3 KB Created: 2021-07-21 05:21:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 949422be3e53d24c03cf592bfaf7e57d SHA-1: 906c4b9fbae50eff4120bf4f4d420c3c92aa8789 SHA-256: 6a41bb6f24446867c37fec950cb539291a0ff4d90684752d4230f41762701237
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 0.9942

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 http://netcdn.tw/app/406889139/coin-master-free-blogspot-game-hack PDF link annotation
    • http://genialica.de/images/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://genialica.de/images/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://genialica.de/images/minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://genialica.de/images/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • http://genialica.de/images/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://genialica.de/images/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://genialica.de/images/free-minecraft-codes_GM479516143.pdfIn PDF document text
    • http://genialica.de/images/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://genialica.de/images/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://genialica.de/images/buy-robux-free_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_off00002b00.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2B00 23336 bytes
SHA-256: a15141b1c732e9b7c352a7493b145124b455be2a0d7d90f97245ae3ef906b65e
font_01_sfnt_off00005fac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAC 18464 bytes
SHA-256: 3d1506adb004325b5ad849f11167115e1f90dbd1428f7e6d98779d75984a0c30

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