Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bc25ea6fc09543a…

MALICIOUS

PDF

47.6 KB Created: 2021-05-11 17:09:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: b9a2951140ea8a6d1d8739943c5e489f SHA-1: c8bd9e42df21c7328f2995b51d18acb8201228d8 SHA-256: 1bc25ea6fc09543a12924fcc8cb74caae6e7f3bcdfe76d8fd8763da13e230f21
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering game hacks and free currency, identified as malicious redirectors. The document body and embedded URLs strongly suggest a lure to trick users into visiting potentially harmful sites. No scripts were extracted, but the presence of embedded URLs and the nature of the lures indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/how-to-hack-people-in-roblox-game-hack In PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-hacking-news_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/free-robux-android_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/free-robux-real_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/can-you-earn-robux_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/free-minecraft-account-and-password-2021_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/minecraft-launcher-free_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-free-spins-link-june-2021_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-hack-game_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/como-hackear-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-website_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/coin-master-tiradas-gratis_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/free-robux-scam_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-free-spins-2021-app_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B04 26796 bytes
SHA-256: 1045d20e67ba98c5ccdd638502f3fd68956b5c67e64a2e6fe8d8707b069a2fcd
font_01_sfnt_off00008903.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8903 3992 bytes
SHA-256: 43e72e756231cfd354bd65c2ed3b09ad4eff56ad11e7f155ed2920e6bb7860dd
font_02_sfnt_off0000962a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x962A 18676 bytes
SHA-256: 10ff19610ec10ba06ce370fdc76468137d93ed174f58c2f80433e0d310d8c060

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