Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e210f9c98727f46…

MALICIOUS

PDF

42.8 KB Created: 2021-05-16 02:32:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 3cc3762f7c004ea2b7649f637ccd8a11 SHA-1: 7348c45e5207913f136c80c4ccd52812c053b837 SHA-256: 2e210f9c98727f463db3ad069f3bd400c3365cc305241dcd58fa1df4c39d5ab1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free Robux' and game hacks. The primary malicious URL identified is https://netcdn.xyz/app/431946152/free-robux-no-human-verification-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering lure designed to lead users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/free-robux-no-human-verification-game-hack In PDF document text
    • http://ebook.itn.ac.id/repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/clients-minecraft_GM479516143.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-robux-today_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/clean-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/appsmob-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/roblox-ftw_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-hack-2021-app_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-robux-live_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/lastrick-com-coin-master-hack_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_off0000481a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x481A 25684 bytes
SHA-256: 37ab6a011d2bcf760f66ea2aeba5820c32f9f3b7247da2641bfcd2e3d34ecc04
font_01_sfnt_off00008314.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8314 18860 bytes
SHA-256: 7bf6b254896799c3550cbaf8339a45bd8c79022df116fd793fc899e49cde55bc

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