Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d16a42ee3af2bd3…

MALICIOUS

PDF

36.1 KB Created: 2021-05-22 01:25:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0c3f96a3443d741bb0a273ba179a73bc SHA-1: 597a3c5f5900ebb180d7edaeff96a1a2bf5d1d9c SHA-256: 8d16a42ee3af2bd30cd50ca69638580ff5a4e4b5ab724beabee3a2ba5d22ad9e
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to malicious redirectors, specifically targeting users interested in game hacks and generators like Roblox. The primary lure URL, 'https://netcdn.xyz/app/431946152/roblox-hack-com-game-hack', is associated with known malicious infrastructure. The document body and embedded links suggest a social engineering tactic to drive users to potentially malicious websites that may host further exploits or malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/roblox-hack-com-game-hack In PDF document text
    • http://taskcyg.nl/images/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • http://taskcyg.nl/images/coin-master-collect-today-free-spin_GM406889139.pdfIn PDF document text
    • http://taskcyg.nl/images/free-robux-come_GM431946152.pdfIn PDF document text
    • http://taskcyg.nl/images/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://taskcyg.nl/images/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31DE 25380 bytes
SHA-256: 610da19dff34910cb415659d3491fc4941cd371c74c063169cfac916056d7fa4
font_01_sfnt_off00006b23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B23 18440 bytes
SHA-256: 92e56247950081f5f8ea935637ec6d93dafa31aa334148af106ab9a8365bd2e0

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