Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fec161eb253fbf4…

MALICIOUS

PDF

34.8 KB Created: 2021-06-27 08:48:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 457af10907a936d2230d641a97ee0085 SHA-1: d22de34d77ace8b521d0f6f32c1f8cbfa7cb0e03 SHA-256: 2fec161eb253fbf4c0ac6d3d55b49c66b100d145162ec82b6dcabb3ad2a55626
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, that lure users with promises of game hacks and free currency. The primary link, http://netcdn.co/app/431946152/how-to-get-free-bc-on-roblox-2021-game-hack, is designed to entice clicks. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or social engineering attack aimed at driving traffic to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.co/app/431946152/how-to-get-free-bc-on-roblox-2021-game-hack In PDF document text
    • https://ibelive.tw/image/data/files/free-robux-enter-password_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/2021-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/tiradas-coin-master_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/coin-master-free-2021_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/minecraft-java-account-free_GM479516143.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/spin-and-coin_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-robux-codes_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-tiktok-coins-2021_GM835599320.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/feb-23-2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-to-downgrade-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/daily-coin-master-free-spin-apk_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/coin-master-hack-xyz-download_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/pokemon-go-free-1km-buddy_GM1094591345.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-robux-today_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/roblox-parkour-hack-2021_GM431946152.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_off00002f4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F4E 22808 bytes
SHA-256: 1aaf6c58a4f5ac7f99d1e63699a6717e54816f3265f55aabfa00431485f467e7
font_01_sfnt_off00006221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6221 19320 bytes
SHA-256: 0614787847ec447f721494fe15349f2f03e6fafe2a6571fbc52abb701ebac523

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