Malicious PDF — malware analysis report

Static analysis result for SHA-256 4714019993749db1…

MALICIOUS

PDF

34.1 KB Created: 2021-07-05 18:29:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-14
MD5: d40bf3ff975c49b33ec3d2a9cc771b4b SHA-1: 07b910a41042b6bc73a91377dff021640f661d1c SHA-256: 4714019993749db16bc59492c0c1df9672933d772c90f78597d31886cba7342e
160 Risk Score

Malware Insights

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

This PDF document employs a lure related to game hacks and free currency to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or malware downloads. The document's structure and embedded URLs strongly suggest a phishing or malware distribution campaign.

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.tw/app/431946152/roblox-hacked-warning-game-hack In PDF document text
    • http://perpustakaan.idia.ac.id/repository/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/how-hack-roblox-expoits_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/coin-master-hack-ios-jailbreak_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/how-to-hack-coin-master-game-ios_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/coin-master-free-link-daily_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/free-robux-no-human-verification-2021-working_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/https-pastebin-com-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/free-coin-master-gold-cards_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
font_00_sfnt_off00002f5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F5B 22188 bytes
SHA-256: 9bf1f0a131655f64763783012d7e31e283810b2481280d0145ecf2496cb0089f
font_01_sfnt_off00006030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6030 18964 bytes
SHA-256: f4448cb4f0cf332763bfef0baceb49de3cb40f97c83f438a4f843ddbe3c60663

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