Malicious PDF — malware analysis report

Static analysis result for SHA-256 c58c2c749b9dccb8…

MALICIOUS

PDF

43.2 KB Created: 2021-06-03 14:58:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2b8d09d2c236b3413b423cf28096f793 SHA-1: ad8e385e4d0bd48f9ba23a2459c201d573ca610f SHA-256: c58c2c749b9dccb8304469a7dd19ac0d1cff61d1013346dcee026edc8474d02c
160 Risk Score

Malware Insights

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

The PDF document contains multiple links, including one to a known malicious redirector, disguised as a 'free generator / game hack'. This suggests a social engineering lure to trick users into visiting a potentially harmful website. The document's content and embedded links indicate an attempt to exploit user interest in free in-game items or cheats, likely leading to further malware delivery or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/robux-free-promo-codes-game-hack In PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/guide--coin-master-free-tips_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-tiktok-fans-no-verification_GM835599320.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-coins-and-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/roblox-skin-free_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-roblox-acc_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-roblox-svg_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/microsoft-roblox-rewards_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/cute-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-images_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/rbx-sites_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_off00004dde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DDE 24204 bytes
SHA-256: 2b08a86ec7408bcb424baf1e91678c7263feda0925e739f4408c43cebfb51c77
font_01_sfnt_off00008539.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8539 18604 bytes
SHA-256: 72370e69d4b3437de95b76ada03da26e1fdb3d0ee534a059885e6f785b63064d

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