Malicious PDF — malware analysis report

Static analysis result for SHA-256 a75516b6b6309d0e…

MALICIOUS

PDF

48.0 KB Created: 2021-06-11 12:57:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: eca2100f2b67070c20d28385e44f0ee5 SHA-1: 88628f88fc66e87d4cf4a65800a8f17e13b1d08a SHA-256: a75516b6b6309d0e61a2511e685e769f28725ae9aac231c859ce118ce18a2216
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to a known malicious infrastructure, likely serving as a lure for game hacks or cheats. The document body and heuristics indicate a "free generator / game hack" theme, often used to disguise malicious redirects or downloads. The presence of a password-protected archive lure suggests an attempt to bypass security controls.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.tw/app/431946152/can-you-hack-roblox-accounts-game-hack In PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-dance-your-blox-off-cheats-to-get-points_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/how-to-get-free-avartar-shings-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-hack-robux-ezy_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-roblox-members-for-groups_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/how-to-lego-hack-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/how-to-get-robux-for-free-2021-october_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/cipher-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-201-exploit-free-lvl7_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/how-to-hack-ninja-legends-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-robux-no-verification-or-password_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-yugioh-gx-world-cheats_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/how-to-earn-a-ton-of-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-hack-2021-december_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-studio-free-download-for-windows_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-robux-no-verification-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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53CC 25288 bytes
SHA-256: 97b0358cce8926d79af34ee93b27662167020e0266fb3c040a951abb45fe3c6e
font_01_sfnt_off00008df1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DF1 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off000097a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97A0 18588 bytes
SHA-256: 2786b1b857c572913cace85d332dbc96413a5988f9859ae69da55c86f93871d4

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