Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1e9ee2f1ee8c6eb…

MALICIOUS

PDF

41.6 KB Created: 2021-05-10 19:33:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 7ef04eef13c645038edf21b268374c02 SHA-1: 9430d84307e4f5b538a5a70e0ed631316c859c50 SHA-256: e1e9ee2f1ee8c6eb9bcbb0411be6ad3493f2623ba73354c386b31775a6f97557
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 0.9971

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-stuff-game-hack PDF link annotation
    • https://www.udivadlahotel.cz/images/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.udivadlahotel.cz/images/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.udivadlahotel.cz/images/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdfIn PDF document text
    • https://www.udivadlahotel.cz/images/www-robux-com_GM431946152.pdfIn PDF document text
    • https://www.udivadlahotel.cz/images/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
    • https://www.udivadlahotel.cz/images/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • https://www.udivadlahotel.cz/images/coinmaster-spins_GM406889139.pdfIn PDF document text
    • https://www.udivadlahotel.cz/images/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • https://www.udivadlahotel.cz/images/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://www.udivadlahotel.cz/images/apps-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.udivadlahotel.cz/images/is-coin-master-hacks-safe_GM406889139.pdfIn PDF document text
    • https://www.udivadlahotel.cz/images/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • https://www.udivadlahotel.cz/images/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://www.udivadlahotel.cz/images/real-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://www.udivadlahotel.cz/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.udivadlahotel.cz/images/coin-master-hack-version-ios_GM406889139.pdfIn PDF document text
    • https://www.udivadlahotel.cz/images/can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.udivadlahotel.cz/images/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • https://www.udivadlahotel.cz/images/coin-master-unlimited-spins_GM406889139.pdfIn PDF document text
    • https://www.udivadlahotel.cz/images/free-roblox-accessories_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_003_off00004928.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4928 25088 bytes
SHA-256: 4afbf11017da580f1b26f4bfb8186bb5fa8ae0f5d82f1c3bd0041551c687c5b6
font_01_sfnt_off000081b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81B8 17848 bytes
SHA-256: 49970788d519349fbd5ba6badf06c324563f4794a9a5c1e41d0627a31815ac32

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