Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ba1fc3ce4ce676a…

MALICIOUS

PDF

35.4 KB Created: 2021-06-27 20:32:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 4c4493958c6a8c8d212fdbe7de52f7be SHA-1: c597fded405bac187ece9b52f67bd93db9d5616a SHA-256: 1ba1fc3ce4ce676a56bbfa3f2133f5f0f5e369ca1e5b6bece497735dd25b5698
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links to a known malicious redirector infrastructure, disguised as 'game hacks' and 'free generators'. The primary link, http://netcdn.co/app/431946152/jailbreak-roblox-hack-2021-game-hack, is designed to lure users into downloading a payload. The document's structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/jailbreak-roblox-hack-2021-game-hack In PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/free-roblox-game-card-codes-25_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/free-card-collection-in-coin-master_GM406889139.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/robux-free-c_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/roblox-hacked-codes_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/how-to-get-free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/roblox-top_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/hacker-website-for-roblox_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/roblox-com-free-skin_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/tix-factory-tycoon-roblox-cheat_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/bloxburg-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/minecraft-rtx-download-free_GM479516143.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/free-roblox-items-codes-2021_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/try-minecraft-free_GM479516143.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/coin-master-unlimited-spin-apk-free-download_GM406889139.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/free-minecraft-account-and-password_GM479516143.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
font_00_sfnt_off00003316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3316 22232 bytes
SHA-256: 0c32d3cffd2b6d464e9847b78f8762e521cda1b3d2a04cf65fb11226db4a22c2
font_01_sfnt_off00006467.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6467 19344 bytes
SHA-256: b348a0805a1024f244d199121c894482a78a21d11eac6291bc3c12a4c379ee3a

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