Malicious PDF — malware analysis report

Static analysis result for SHA-256 7417e15ea15828a1…

MALICIOUS

PDF

34.8 KB Created: 2021-07-08 19:40:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 02ca17ed07d471334b86dead1961faef SHA-1: de3861d33049f6d4467418d2825fca39d90ab3ff SHA-256: 7417e15ea15828a14c98b87bd797d85af81f160f06721e0d1ac6b1971d357404
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as "free generators" or "game hacks" for popular games. The primary lure URL is http://netcdn.tw/app/431946152/roblox-bloxburf-money-hack-game-hack, which is designed to trick users into clicking through to potentially harmful content. No scripts were extracted, but the embedded links and heuristic firings strongly indicate a phishing or scam 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.tw/app/431946152/roblox-bloxburf-money-hack-game-hack In PDF document text
    • http://perpustakaan.idia.ac.id/repository/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/free-roblox-animations_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/roblox-strucid-free-skin-code_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/sb-game-hacker-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/coin-master-spin-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/roblox-generator_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/coin-master-cheat-apk-free-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/case-clicker-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/free-tiktok-views_GM835599320.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/hacked-tycoon-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/how-to-change-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/free-robux-p-astebin_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/roblox-hack-apk-ios_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
font_00_sfnt_off00003127.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3127 22592 bytes
SHA-256: 840b4bb930e274fec9ec64df430495194aeca6d9d94d1fe0c82f1065bbbee2f8
font_01_sfnt_off00006351.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6351 18988 bytes
SHA-256: e1d96053076db2d1ed0234a5081df4dd6ce61ffd87bcfdbc19dcc7e089cdc79a

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