Malicious PDF — malware analysis report

Static analysis result for SHA-256 dae58db52cdf8859…

MALICIOUS

PDF

49.4 KB Created: 2021-05-01 01:11:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 7fc12dead8ef644935a04382718283fb SHA-1: abe167fe7cd9cb50c4b7a787685aa54079fdf3df SHA-256: dae58db52cdf8859dce320f53410236ed52ceaf2ba980811ffd97df5300b63c8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering "game hacks" and "free generators", with a primary link redirecting to known malicious infrastructure. The document body explicitly contains a call to action to "CLICK HERE TO ACCESS ROBLOX GENERATOR", further reinforcing the lure. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or scam attempt, likely leading to malware download or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9905

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.xyz/app/431946152/how-to-hack-roblox-game-2021-game-hack In PDF document text
    • http://lib.unwahas.ac.id/repository/loot-box-free-robux.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/free-roblox-admin-accounts-with-robux.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/free-robux-no-human-verification-2021-website.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/gratuit-et-sans-code-hack-roblox-mad-city.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/how-to-hack-accounts-in-roblox-2021.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/roblox-restaurant-tycoon-money-hack-website.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/how-to-get-free-robux-no-download-2021.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/show-me-how-to-get-free-robux-on-roblox.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/best-free-dominus-in-roblox.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/cat-ears-roblox-free.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_003_off000043c1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x43C1 41980 bytes
SHA-256: 81f5e91443747763f7dcb23e2e9aa68d56657bd190c717a8c76456031f2ca2d3
font_01_sfnt_off00009d90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D90 19008 bytes
SHA-256: 4052a4329353dfd8f825a184313827dcb7d28579bd23effd71864e96ef06b38c