Malicious PDF — malware analysis report

Static analysis result for SHA-256 8951809533e49df4…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 19:41:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 4d934e7112112ab941b7bc36bc06c81c SHA-1: cf9a2cd527e635612ba41da73b296fc854d28a01 SHA-256: 8951809533e49df4867db64e4d6250eabdb11f53981b0b1728e569b6e0ac9501
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded links that redirect to a malicious domain, masquerading as a generator for free in-game currency. This is a common social engineering tactic to trick users into visiting potentially harmful websites. The ML classifier also strongly indicated maliciousness.

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/479516143/minecraft-pe-free-ios-game-hack In PDF document text
    • https://elearning.man1tapin.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapin.sch.id/__statics/gudangsoal/files/mcpe-com_GM479516143.pdfIn PDF document text
    • https://elearning.man1tapin.sch.id/__statics/gudangsoal/files/robux-free-c_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapin.sch.id/__statics/gudangsoal/files/cheat-codes-for-hoes-roblox-song-id_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapin.sch.id/__statics/gudangsoal/files/robux-cheat-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapin.sch.id/__statics/gudangsoal/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapin.sch.id/__statics/gudangsoal/files/free-robux-app-by-roblox-events_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapin.sch.id/__statics/gudangsoal/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapin.sch.id/__statics/gudangsoal/files/all-coin-master-spin-link-and-free-download_GM406889139.pdfIn PDF document text
    • https://elearning.man1tapin.sch.id/__statics/gudangsoal/files/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapin.sch.id/__statics/gudangsoal/files/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapin.sch.id/__statics/gudangsoal/files/roblox-hack-2021-september_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapin.sch.id/__statics/gudangsoal/files/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapin.sch.id/__statics/gudangsoal/files/fake-robux-codes_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapin.sch.id/__statics/gudangsoal/files/free-robux-promo-codes-pastebin_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapin.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-big-brother_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapin.sch.id/__statics/gudangsoal/files/how-t-oget-ant-free-robux-item_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapin.sch.id/__statics/gudangsoal/files/coin-master-hack-cheat-engine_GM406889139.pdfIn PDF document text
    • https://elearning.man1tapin.sch.id/__statics/gudangsoal/files/free-robux-mobile_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapin.sch.id/__statics/gudangsoal/files/coin-master-hack-com_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000034d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34D5 21848 bytes
SHA-256: 36f4d1ff8ad00171054fc0ac410b168802e225dc37e8ef8ca39ff16b111feb56
font_01_sfnt_off000064a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64A1 18152 bytes
SHA-256: 9217169def43f8c16a67344ac79484d347e21e3639697df2a6f77d3a213ff034

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