Malicious PDF — malware analysis report

Static analysis result for SHA-256 948c96700cc3e622…

MALICIOUS

PDF

44.1 KB Created: 2021-06-03 22:24:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 4885d4c42185c32c28abce06451de9d6 SHA-1: 708ae97fc98ee9c599372c405e8e1cc7b179fb5e SHA-256: 948c96700cc3e62263b651134b625278b4f0463aa298a40ba41e4eec213da30d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The primary malicious link identified is https://netcdn.online/app/406889139/hack-coin-master-2021-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering tactic to drive users to potentially harmful websites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/hack-coin-master-2021-game-hack In PDF document text
    • https://library.sman1berau.sch.id/repository/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-minecraft-website_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-hack-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/is-minecraft-free_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/juego-hackeado-de-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/online-coin-master-hack-here_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-spins-twitter_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/50-000-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/robloxhacks_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coinmaster-twitter_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/without-pokemon-go-free-promo-codes_GM1094591345.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-make-your-own-minecraft-server-for-free_GM479516143.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_004_off00005254.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5254 24464 bytes
SHA-256: 0fe61843fda0c1d084692694e0a243bf16a95fe0954efbd15b8e2d8ac5ec0082
font_01_sfnt_off000089fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89FB 18116 bytes
SHA-256: a3df71077179c7440b1e4836f0868e786a4fbdd8e53d65e7c5dca2578e10a822

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