Malicious PDF — malware analysis report

Static analysis result for SHA-256 aac19c0b9031be16…

MALICIOUS

PDF

34.3 KB Created: 2021-06-26 15:52:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dcdcbc8be58dc6fab54da11e40533ec9 SHA-1: d2de6f3d89c3a124d1a9f09e51c8323da3b49036 SHA-256: aac19c0b9031be1691caa2b104f8d82b44382d8e71cc088f1e0fd842f9ae91bd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a critical heuristic firing for a game hack redirect lure, pointing to a known malicious URL. The document body and embedded URLs reinforce this by advertising cheats and hacks for popular games like Roblox and Coin Master. The primary malicious URL identified is http://netcdn.co/app/431946152/put-cheat-codes-roblox-game-hack, which is likely used to deliver a second-stage payload or phish for credentials.

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/put-cheat-codes-roblox-game-hack In PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/bot-that-buys-any-free-item-instantly-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-working_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/get-anything-in-the-roblox-catalog-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-twitter-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/rbxboost-com-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-roblox-card-code-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hack-android_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-hack-roblox-rpg-games_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-hack-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-robux-website_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-hack-extension_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-hack-site-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-daily-spins-and-coins_GM406889139.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_off00002eab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EAB 22388 bytes
SHA-256: 950660f02928335733b3eff315fd0fae2bd6743bc5263ffea5545b9b973ea59c
font_01_sfnt_off0000606c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x606C 19224 bytes
SHA-256: b7eb31626cb2c313ae65937ebb24a153ef701eab596e7d8ef44e50bc00ad678d

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