Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5a8da915904e4a1…

MALICIOUS

PDF

43.1 KB Created: 2021-05-12 23:41:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: bb27fd7e30f4fdf67a421f566679c803 SHA-1: 0eb550ce66956d990350cc4e88b55ba0daf9a19d SHA-256: d5a8da915904e4a14f45da50685c454cb15bf377fd812a20179d2a27751d39c2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector infrastructure, disguised as a game hack generator. The document body and embedded URLs reinforce this lure, aiming to trick users into visiting potentially harmful sites. While no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to lead users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/free-roblox-adopt-me-pets-game-hack In PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/coin-master-connection-lost_GM406889139.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/coin-master-free-food_GM406889139.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/coin-master-daily-free-coins-link_GM406889139.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/minecraft-java-account-free_GM479516143.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/coin-master-spins-for-free_GM406889139.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/coin-master-heaven-links-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/haktuts-coin-master-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/free-coins_GM406889139.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/robux-free-co_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/robux-no-survey_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/roblox-redeem-codes-free_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/official-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/games-that-give-you-free-robux_GM431946152.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
stream_003_off0000481c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x481C 25836 bytes
SHA-256: 7caab8df79595d29b07eea08f1ef975c4c58b698c9a69449f250d192dcc23285
font_01_sfnt_off000084c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84C2 18752 bytes
SHA-256: 52cfe92e200dfff1806eef07ab2f46449592264c572d29f9bbb977df1fa2ebc4

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