Malicious PDF — malware analysis report

Static analysis result for SHA-256 76df48e6d666d0e8…

MALICIOUS

PDF

36.4 KB Created: 2021-06-25 21:13:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 5831f58e5c1586a98aea39db7d283860 SHA-1: 750154575dab7331c2740141204bd8af402ccf5e SHA-256: 76df48e6d666d0e8b111db9f7fb703eea791bc1c7df6f6862bf4018689adeaaa
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and text that promote free in-game items for popular games like Roblox and Minecraft. These links direct users to a malicious redirector URL, indicating a phishing or scam attempt. The ML classifier also strongly flagged this PDF as malicious.

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/code-for-free-skin-roblox-wild-revolvers-game-hack In PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-robux-redeem-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/roblox-cheat-exploit_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/bit-ly-free-robux-gen_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/withdraw-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-group-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/admin-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/download-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-robux-net_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_off000035f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35F3 22480 bytes
SHA-256: 3921958385e0a1975795791ea07f48bc421156091f63dd703fdb8c1e07766b21
font_01_sfnt_off00006826.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6826 19424 bytes
SHA-256: 8b0088c94bb431b29657e35d4057ef980f27914e3f8e7599ad4c5718cb474ebd

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