Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cd2b0d048d2c633…

MALICIOUS

PDF

33.1 KB Created: 2021-07-19 13:01:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 4a53bf87e6cc04bdd05606c6e8a523e7 SHA-1: 40919c3d726ab86bc700e4e57d88a85eb80cff7a SHA-256: 7cd2b0d048d2c633e3952d23449cdcc8778f40c55ca6087a6578fb072eb2d631
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector, masquerading as a game hack generator. The document body text and embedded URLs strongly suggest a lure for users seeking cheats or free items for games like Coin Master and Roblox. The presence of multiple redirector links indicates a clear intent to lead the user to potentially harmful content or further malicious downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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 http://netcdn.tw/app/406889139/coin-master-daily-free-spins-game-hack In PDF document text
    • https://tegeler-segler.de/images/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • https://tegeler-segler.de/images/free-tiktok-likes-2021_GM835599320.pdfIn PDF document text
    • https://tegeler-segler.de/images/free-tiktok-video_GM835599320.pdfIn PDF document text
    • https://tegeler-segler.de/images/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://tegeler-segler.de/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://tegeler-segler.de/images/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://tegeler-segler.de/images/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • https://tegeler-segler.de/images/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • https://tegeler-segler.de/images/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://tegeler-segler.de/images/roblox-password-hacker_GM431946152.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
font_00_sfnt_off00002c03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C03 22908 bytes
SHA-256: 912128c3be8b21117b3ca6413c81e48e1c41a977a10e40b4304c2d475f2650b1
font_01_sfnt_off00005f7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7D 18308 bytes
SHA-256: e42bde5f0ce420544e36e42831a39ceefa2103814e02a0c87b67b282abd28734