Malicious PDF — malware analysis report

Static analysis result for SHA-256 68ac2c91278ae3d5…

MALICIOUS

PDF

34.4 KB Created: 2021-06-27 08:31:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: bc7ebe632a13fa5e7e384f2fb62cedc4 SHA-1: 0a314cee492b5f904c9ab6f62a6f59791ad01ffa SHA-256: 68ac2c91278ae3d5d8370dbd5b07d6bb2d99cda5c01973ac038698d68f7cfe93
188 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains XFA forms and is malformed, indicating an attempt to exploit vulnerabilities. It includes a critical heuristic firing for linking to known malicious redirector infrastructure, specifically advertising a 'free generator / game hack'. The embedded document body text and numerous URLs reinforce this lure, directing users towards potentially malicious sites disguised as game cheats. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • 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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • 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/roblox-mad-city-free-money-game-hack In PDF document text
    • https://www.planetzoe.hr/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://planetzoe.hr/files/roblox-jailbreak-hack-2021_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/i-need-robux_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/free-spins-coin-master-app-iphone_GM406889139.pdfIn PDF document text
    • https://planetzoe.hr/files/break-free-roblox-id_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/hack-coin-master-android_GM406889139.pdfIn PDF document text
    • https://planetzoe.hr/files/hack-roblox-2021-robux_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://planetzoe.hr/files/free-tiktok-accounts-and-passwords_GM835599320.pdfIn PDF document text
    • https://planetzoe.hr/files/how-to-get-free-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/coin-and-spin-link_GM406889139.pdfIn PDF document text
    • https://planetzoe.hr/files/minecraft-windows-free_GM479516143.pdfIn PDF document text
    • https://planetzoe.hr/files/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/roblox-avatar-com_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/try-minecraft-free_GM479516143.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_off00002e8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E8F 22376 bytes
SHA-256: ce1cb4472dec942f8e867a7ef824a602d19ded94927c5b89d3c7dd39ad0006f7
font_01_sfnt_off00006027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6027 19424 bytes
SHA-256: 585f76d5e14f713b17d9c6b7cbcda310ab53824682ef4e3e57da727c390ae11d

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