Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a0f75f403810e6e…

MALICIOUS

PDF

43.1 KB Created: 2021-05-17 18:40:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c5c40d3f496ca3a15d9b572ab4fa0dcd SHA-1: d05c64a77c002207c5d0482543d937360c2a791c SHA-256: 3a0f75f403810e6ecc368441a644d39f36fcb5efd226efc9d0153fa41020b103
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting 'free Robux' and game hacks. The document body and embedded URLs strongly suggest a lure for users interested in such topics. The primary malicious link identified is https://netcdn.xyz/app/431946152/best-way-to-get-free-robux-game-hack, which is associated with redirector infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/best-way-to-get-free-robux-game-hack In PDF document text
    • https://ibelive.tw/image/data/files/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-to-get-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/minecraft-pe-hacks-2021_GM479516143.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/coin-master-free-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-unlimited-coin-master-online-tool_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/all-minecraft-handbooks_GM479516143.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-robux-safe_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/coin-master-500-free-spins_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/mcpe-master-hack-unlimited-coins_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/coin-master-key-free-spin_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/coin-master-free-spins-2021-generator_GM406889139.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_003_off00004a02.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A02 25288 bytes
SHA-256: 55b44d5913305b095bc0a009c750f521bd43857632859923da26b87d9c5f2484
font_01_sfnt_off00008496.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8496 18724 bytes
SHA-256: 0e67c697191027b8b448214b8413bf6f3ed0ff1165507b95d6a34aabcad7a82f

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