Malicious PDF — malware analysis report

Static analysis result for SHA-256 25784a1b735721c6…

MALICIOUS

PDF

34.3 KB Created: 2021-07-03 21:20:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 389ac1fad973a99ade9bc63454f4826e SHA-1: a9904d75c53bb70e9ed53a06f1a2ab9974805d6d SHA-256: 25784a1b735721c6bd87cd09a2760db9eea9de837c83991fde5359bd68ee4749
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs and a prominent link within its body text, all pointing towards 'free generator' or 'game hack' lures. The primary malicious URL identified, http://netcdn.tw/app/431946152/roblox-money-hack-game-hack, is flagged as a known malicious redirector. This suggests the document's purpose is to trick users into visiting these sites, likely leading to further malicious content or scams.

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.tw/app/431946152/roblox-money-hack-game-hack In PDF document text
    • https://elearning.el-man3jkt.com/__statics/gudangsoal/files/how-to-get-free-robux-without-verificaton_GM431946152.pdfIn PDF document text
    • https://elearning.el-man3jkt.com/__statics/gudangsoal/files/roblox-xyz-hack_GM431946152.pdfIn PDF document text
    • https://elearning.el-man3jkt.com/__statics/gudangsoal/files/how-to-change-your-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.el-man3jkt.com/__statics/gudangsoal/files/what-happens-if-you-go-on-a-free-robux-website_GM431946152.pdfIn PDF document text
    • https://elearning.el-man3jkt.com/__statics/gudangsoal/files/free-roblox-animations_GM431946152.pdfIn PDF document text
    • https://elearning.el-man3jkt.com/__statics/gudangsoal/files/can-lucky-patcher-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.el-man3jkt.com/__statics/gudangsoal/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.elearning.el-man3jkt.com/__statics/gudangsoal/files/how-to-take-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.el-man3jkt.com/__statics/gudangsoal/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.el-man3jkt.com/__statics/gudangsoal/files/free-robux-gift-card-codes-unused-2021_GM431946152.pdfIn PDF document text
    • https://www.elearning.el-man3jkt.com/__statics/gudangsoal/files/dev-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://elearning.el-man3jkt.com/__statics/gudangsoal/files/roblox-work-at-a-pizza-place-hack_GM431946152.pdfIn PDF document text
    • https://elearning.el-man3jkt.com/__statics/gudangsoal/files/how-to-get-a-free-dominus-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.el-man3jkt.com/__statics/gudangsoal/files/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • https://elearning.el-man3jkt.com/__statics/gudangsoal/files/roblox-tos-for-cheating-and-exploiting_GM431946152.pdfIn PDF document text
    • https://elearning.el-man3jkt.com/__statics/gudangsoal/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.el-man3jkt.com/__statics/gudangsoal/files/free-robux-android_GM431946152.pdfIn PDF document text
    • https://elearning.el-man3jkt.com/__statics/gudangsoal/files/cm-spin-link_GM406889139.pdfIn PDF document text
    • https://www.elearning.el-man3jkt.com/__statics/gudangsoal/files/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.el-man3jkt.com/__statics/gudangsoal/files/how-to-hack-people-on-roblox_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_off000030d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D0 21860 bytes
SHA-256: fc9c9fac4f52162114466a47afef6f34b56eb7c8911970fd432d8d1341d90b89
font_01_sfnt_off000060ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60FF 19032 bytes
SHA-256: 203e1121f486a9f27f7b8b1bc344d44945bd10d034850d35ac5f84883fff97b4

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