Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebc1d076d7e163ed…

MALICIOUS

PDF

43.3 KB Created: 2021-05-13 13:02:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8c9ae972e545580118cc259f287d65ec SHA-1: 53896ea9ec44ddeea78337005dab24cc12e1bd34 SHA-256: ebc1d076d7e163ed034c3dfd809ef551b2c6878d1fb2b5667285dae0be8b80c4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to pages promising game hacks and free currency, a common lure for phishing or malware distribution. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' specifically flags this behavior. While no scripts were extracted, the presence of numerous suspicious URLs suggests the document is designed to trick users into visiting malicious sites.

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/431946152/how-do-you-get-robux-game-hack PDF link annotation
    • https://esl.ipb.ac.id/images/how-to-get-free-skins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/how-to-get-stuff-that-cost-coins-free-mcpe-master_GM406889139.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/coin-master-free-spins-no-verification_GM406889139.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/best-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/robux-fun-hack_GM431946152.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/coin-master-hack-spins-apk-download_GM406889139.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/mcpe-master-hack-unlimited-coins_GM406889139.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/www-coinmaster-com_GM406889139.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/coin-master-app_GM406889139.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/robuxglobalcom_GM431946152.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/multiplayer-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/rewardex-robux_GM431946152.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_off00004923.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4923 26300 bytes
SHA-256: 8cb4426413baa480cbe7ebacf75a1b4c7c18f3cbf5b2af0d6aa3c962e32f1cfc
font_01_sfnt_off00008638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8638 18448 bytes
SHA-256: d9f15c8d06a9f68edc08429574edcd345d0edfc323a0421ca163819fb1e2672f

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