Malicious PDF — malware analysis report

Static analysis result for SHA-256 e189e7b48a023cd4…

MALICIOUS

PDF

34.6 KB Created: 2021-06-18 01:44:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: aeaaa431583737123ae4c2452d53a1d6 SHA-1: a4547280c3ae2beca12d19796cabb62d48c7b142 SHA-256: e189e7b48a023cd4b8798fc55383e6ef6e21a4b353cf2b5da7fd587a73323117
200 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to a known malicious URL. The document body also contains a call to action and the malicious URL, suggesting a phishing or scam attempt. The presence of embedded URLs and the ML classifier's high confidence further support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/how-to-get-free-robux-on-roblox-game-hack In PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/hack-coin-master-pc_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id//repository/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/coin-master-free-spins-link-blogspot-april-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/wwwcoin-master-free-spincom_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id//repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/coin-master-free-coins--spins_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/free-roblox-card-codes-august-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/coin-master-el-tiger-card-free_GM406889139.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id//repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/roblox-god-hack-download_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/coin-master-32-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/how-to-get-free-clothes-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/bug-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/free-robux-hack-no-human-verification-or-survey_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_off00003145.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3145 22076 bytes
SHA-256: 53d08a41c846b45290e4a603c83bc9d0bf1e09946971186cd1252114def265f1
font_01_sfnt_off00006237.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6237 19056 bytes
SHA-256: 22e79bf31db193f266ad8ef0f47d1a9e736b831aec58415b80c9b2f57893c59e

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