Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b0d40beb323aa76…

MALICIOUS

PDF

46.7 KB Created: 2021-06-03 22:56:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1cc7a15ac7d822f5aa9ac448052fe39a SHA-1: ccdca7ee9aaafa343e35a943380ac346591b1aa4 SHA-256: 1b0d40beb323aa761a38a482e39e669183cd8bfedde286328294a21935d6b4ef
160 Risk Score

Malware Insights

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

The PDF contains multiple links pointing to a known malicious redirector infrastructure, disguised as a 'game hack' or 'free generator' lure. The embedded URL 'https://netcdn.online/app/431946152/how-to-get-more-robux-game-hack' is directly associated with this malicious activity. The ML classifier also flagged this PDF with high confidence.

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.online/app/431946152/how-to-get-more-robux-game-hack In PDF document text
    • http://perpus.wdh.ac.id//repository/free-minecraft-for-kids_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/is-minecraft-free-on-switch_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/make-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/minecraft-com-free_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-minecraft-shaders_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/likes-for-tiktok-free_GM835599320.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/minecraft-packs-free_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/robux-apk_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/moonactive-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/get-free-minecraft-account_GM479516143.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
stream_004_off0000501b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x501B 29364 bytes
SHA-256: cc64cff6c08d884de921482958220c350d718d523ff785b70e45d138b5eded28
font_01_sfnt_off000093d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93D6 18312 bytes
SHA-256: b63754bab8a539e11eebb32f86c31dbe9ceb60be690df901f3a3ba32c84f6f1e

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