Malicious PDF — malware analysis report

Static analysis result for SHA-256 0464245f02223d8f…

MALICIOUS

PDF

47.5 KB Created: 2021-06-11 04:05:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: c55aaf7bf2dcb3dc5cfb16188c921e4d SHA-1: 6c801d66d0d9ea4619d20c840fe9a8a88cff15cd SHA-256: 0464245f02223d8fdf3dca9d63738761d0c0275b042ab7883f3f11a2868ad608
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The primary malicious URL identified is https://netcdn.tw/app/431946152/free-roblox-code-redeem-game-hack. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting potentially harmful sites. No scripts were extracted, but the heuristic firings strongly indicate a redirection-based attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/free-roblox-code-redeem-game-hack In PDF document text
    • http://opac.salatiga.go.id/slims7//repository/coin-master-hack-software_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/welcome-to-my-free-modeled-game-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-robux-live_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-online-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/village-3-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/coin-master-free-100-spin-link_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/coin-master-hoe-to-get-extra-free-spins_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/coin-master-free-generator_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/roblox-free-vip-server_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/coin-master-hack-apk-facebook-login_GM406889139.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_off00005326.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5326 30064 bytes
SHA-256: e39faadbdce34a368a2aad6438b3154bbf5a9354a893ad1609115efd9cc1c5d8
font_01_sfnt_off000096f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96F4 18380 bytes
SHA-256: 3697ef0f7482c4dd547c76bee5df88728268840bfa5a5b1f6509f5514ca853d4

Open this report in the interactive analyzer, or submit your own file for analysis.