Malicious PDF — malware analysis report

Static analysis result for SHA-256 e457fae810dd33b2…

MALICIOUS

PDF

38.3 KB Created: 2021-05-23 22:09:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6056e0ffdecc26acaaeeedea593e9370 SHA-1: 53b455afdc0f79c17f3f5ad2bcd6234ad8a5e355 SHA-256: e457fae810dd33b2209650a30068443aeda5ba13da433794f48c3076d963c76d
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple high-severity heuristics indicating it is designed to lure users with promises of free game hacks and generators. The document body and embedded links point to URLs associated with such lures, suggesting the primary goal is to trick the user into clicking a malicious link. No scripts were extracted, but the presence of multiple game-hack lures and a browser extension installation lure strongly suggests a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7268

Heuristics 7

  • PDF links to a 'free generator / game hack' redirector high 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/835599320/tiktok-likes-for-free-game-hack PDF link annotation
    • https://www.lavigny.ch/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • https://www.lavigny.ch/images/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.lavigny.ch/images/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • https://www.lavigny.ch/images/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://www.lavigny.ch/images/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002fca.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FCA 26212 bytes
SHA-256: 01c9df703ee3eff6e90a7cf2f9a78a0ff840ab384fe923b7ef3cc1132dc09cb8
font_01_sfnt_off00006c2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2F 3028 bytes
SHA-256: ab17a360e1c6cc3bd51eb0273e66e6e25a3de0a2710527473b1670adef5ba43f
font_02_sfnt_off00007696.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7696 17456 bytes
SHA-256: 6bc07a916d4e04dd857b15fc22f6a85a1633f574b63a4730ea8dc15634c660b5