Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dd2bb925d5b8528…

MALICIOUS

PDF

43.4 KB Created: 2021-05-13 12:40:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f13e7ca460c16c844145eeaee742265e SHA-1: 6641b3f8935ef40f226f13f61829c0af08551a42 SHA-256: 8dd2bb925d5b8528b987e817f9cb6e98f8e1eb776cefb092760e81be5faa3087
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links disguised as game hack generators, a common lure for phishing and malware distribution. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs pointing to game-related lures reinforces this assessment. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious sites, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/how-to-get-free-minecoins-in-minecraft-game-hack PDF link annotation
    • http://techmobil.pl/images/free-robux-android_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/daily-free-spins_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/rbx-hut_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-unlimited-spins-hack_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/free-pet-food-for-coin-master_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/unlimited-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-free-spins-a2z-help_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-free-account_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/how-to-change-your-username-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-hack-without-verify_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/roblox-robux_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/free-coins-coin-master-blog_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_off00004f84.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F84 25264 bytes
SHA-256: 71c9339fa7d52b383e28793c361df617b472e586b55ac5e1f10ce16497448d75
font_01_sfnt_off000088aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88AA 17872 bytes
SHA-256: 81b1d154aec9bd98ecdb2ab8ecc7cbe93e1e8bf82edf60babb6ca5717914fb66

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