Malicious PDF — malware analysis report

Static analysis result for SHA-256 68deb7fe90fe5fc5…

MALICIOUS

PDF

37.1 KB Created: 2021-05-23 14:40:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: c9a55f487799d571016d89a32316c086 SHA-1: acd4a86b2385abc9e5b2ab89d2f99c722ed817f3 SHA-256: 68deb7fe90fe5fc5a7650bd00be3afce8838396161e225fe73aee83b43b618af
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically promoting 'game hacks' and generators. The primary lure URL, https://netcdn.xyz/app/431946152/roblox-script-hack-game-hack, is associated with a critical heuristic firing for malicious redirector infrastructure. Additional links point to other PDF files hosted on jbtlive.com, suggesting a chain of malicious redirects or further lures. The presence of a visual download button lure and ML classification further supports the malicious nature of this document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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-script-hack-game-hack In PDF document text
    • http://jbtlive.com/assets/CKImages/files/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/how-to-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/pubg-uc-emoji_GM1330123889.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
stream_002_off000034a3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34A3 25544 bytes
SHA-256: c87ac3885955b21c530ec1e575af33c82700386ab174a35b37aefe3f6af84c2a
font_01_sfnt_off00006ea7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EA7 18580 bytes
SHA-256: c1944f3c26fd870ce0e5de863125d21882df0ce96ba9356e52db8af51b5248a2

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