Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbe1b3658381f620…

MALICIOUS

PDF

34.9 KB Created: 2021-07-25 04:33:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b642b05c4bbd11d44ab9ecd34c8bb762 SHA-1: 9fc158d0ee772749ec97798455bb1c506b9dadba SHA-256: fbe1b3658381f6205594ab54f898bc8570584f1d17372ab13490b730e5fce8a2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as free game hacks or generators. The document body explicitly mentions 'Minecraft Bedrock Edition Pc Download Free' and includes a call to action 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', aiming to trick users into clicking the malicious links. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9962

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/479516143/minecraft-bedrock-edition-pc-download-free-game-hack In PDF document text
    • http://kfz-service-etp.de/images/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://kfz-service-etp.de/images/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://kfz-service-etp.de/images/free-tiktok-likes-no-human-verification-or-download_GM835599320.pdfIn PDF document text
    • http://kfz-service-etp.de/images/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://kfz-service-etp.de/images/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://kfz-service-etp.de/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://kfz-service-etp.de/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://kfz-service-etp.de/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://kfz-service-etp.de/images/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • http://kfz-service-etp.de/images/minecraft-education-edition-free_GM479516143.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_off000033b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33B8 22256 bytes
SHA-256: 8d918c764cef3e8fa2ce49601cc2d5bfa3675e7bd61039766d5d0bded0c36295
font_01_sfnt_off000064f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F1 18828 bytes
SHA-256: bab883dfc84e1a3f345dfae0998a7e69f5c6c1aec602e5a20de586714fc0e9f0