Malicious PDF — malware analysis report

Static analysis result for SHA-256 7688cd5e0067ce7d…

MALICIOUS

PDF

34.4 KB Created: 2021-06-29 03:48:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1201632a37e0b799e8454f70cacc60b4 SHA-1: 09a4d3d0472a3cca592279c49dc32af4e4090092 SHA-256: 7688cd5e0067ce7d102dced319e74b6f580435b7143b6fece232880a3cf6b685
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as "free generator / game hack" lures. The embedded URLs, such as http://netcdn.co/app/431946152/roblox-free-draw-how-to-draw-a-vagina-game-hack, are designed to lead users to potentially harmful content or further malicious sites. The presence of a download button lure and the ML classifier's high confidence score further support the malicious nature of this document.

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.co/app/431946152/roblox-free-draw-how-to-draw-a-vagina-game-hack In PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-free-vip-hack_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-spins-and-coins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-free-group-funds_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/wurst-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/robux-for-surveys_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-websites-that-give-free-roblox-robux-codes_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/rosenberg-roblox-hack-pain-access_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/add-free-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-modded-roblox-games_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-free-robux-giveaway-id_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-roblox-toys_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/how-to-make-a-roblox-group-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/shirt-roblox-2021-free-dowload_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-robux-and-tix-on-roblox-no-survey_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-robux-clothes_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_off00002f3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F3C 22264 bytes
SHA-256: 80b3c11251a7c3c3bca50ce0f7a6ee05b95f0d91b32f545dfa594aa1641a6b2a
font_01_sfnt_off000060d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D7 19236 bytes
SHA-256: 4f29014816e9fc0f585a14532aad38d74bb1ac7958d8cb1e6c21277615e7b8c6