Malicious PDF — malware analysis report

Static analysis result for SHA-256 34c723992e06ffcb…

MALICIOUS

PDF

34.8 KB Created: 2021-07-06 03:19:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: fc83767d927682fe4e6b28796179f6a8 SHA-1: 6ae04f39ab911f5c50608de30fb3816706782fda SHA-256: 34c723992e06ffcb9165c2ca70e51baac0fecb6f5f58e140833c929d7923810e
160 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 redirector lure, pointing to malicious infrastructure. The document body and embedded URLs reinforce this, indicating a social engineering attempt to trick users into visiting a malicious site. The ML classifier also strongly flagged this PDF as malicious.

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/aimbot-download-roblox-game-hack In PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/coin-master-400-spin-link-today_GM406889139.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/new-free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/free-tiktok-likes-without-verification_GM835599320.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/roblox-on-switch-is-it-free_GM431946152.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/master-hack-coin_GM406889139.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/coin-master-attack-hack_GM406889139.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/free-roblox-hakercom_GM431946152.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/free-roblox-generator-for-roblox_GM431946152.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/coin-master-promo-code-2021_GM406889139.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/hack-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://web.smkn1indramayu.sch.id/e-lib/repository/como-hack-coin-master_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_off00003110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3110 22000 bytes
SHA-256: df546e4ec1c6851edde1119b4cf7a76c0faf577411d4d4310c06482f2151550a
font_01_sfnt_off0000619a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x619A 19476 bytes
SHA-256: 8b51af3066dee6258d2a52dc06fae05b8aec8326d23b8a564ee6b42360a33d53

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