Malicious PDF — malware analysis report

Static analysis result for SHA-256 e99a354fde6442c2…

MALICIOUS

PDF

42.9 KB Created: 2021-05-16 14:19:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 526c04e112de5c80ad7a98ccf7ec6eb3 SHA-1: aacd025acc7e20b15f6c77216962dd5ca68ac50a SHA-256: e99a354fde6442c2d35ff37b9673e66b45fb3a02168c10723d04a6178c1d33cf
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' lure. The embedded URL and document body content reinforce this, suggesting a social engineering tactic to drive users to a potentially malicious website. No scripts were extracted, but the primary attack vector appears to be a deceptive link within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/coin-master-free-box-game-hack PDF link annotation
    • http://www.lrnetwork.es/images/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://www.lrnetwork.es/images/free-hair-roblox-boy_GM431946152.pdfIn PDF document text
    • http://www.lrnetwork.es/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.lrnetwork.es/images/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.lrnetwork.es/images/free-robux-co_GM431946152.pdfIn PDF document text
    • http://www.lrnetwork.es/images/free-coins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://www.lrnetwork.es/images/coin-master-free-items_GM406889139.pdfIn PDF document text
    • http://www.lrnetwork.es/images/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://www.lrnetwork.es/images/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.lrnetwork.es/images/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://www.lrnetwork.es/images/coin-master-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • http://www.lrnetwork.es/images/free-25-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://www.lrnetwork.es/images/get-2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.lrnetwork.es/images/free-spins-on-coin-master-app_GM406889139.pdfIn PDF document text
    • http://www.lrnetwork.es/images/minecraft-world-free-download_GM479516143.pdfIn PDF document text
    • http://www.lrnetwork.es/images/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://www.lrnetwork.es/images/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.lrnetwork.es/images/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.lrnetwork.es/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.lrnetwork.es/images/coin-master-free-spins-link-31-march-2021_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
stream_003_off000045ce.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45CE 27352 bytes
SHA-256: b407b55d8db45b1c856084da5717f450e9450464bb39e429911025c1c81025cb
font_01_sfnt_off000085b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85B0 18136 bytes
SHA-256: 5014548489084bc1526755bbac0a98ccda01ba1b83bc85692c033af51eabd5d8

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