Malicious PDF — malware analysis report

Static analysis result for SHA-256 df25fdb92b0951e5…

MALICIOUS

PDF

47.1 KB Created: 2021-06-03 06:18:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: f6e678529c5c135dfd559c54b21b78c6 SHA-1: df753da56d5495438b1410ea51ab52c771a6ce61 SHA-256: df25fdb92b0951e5cbf807bbb058a2907126ddea8134759b301522447f7e5512
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on what appear to be game-related resources, but which redirect to malicious infrastructure. The primary redirector URL is https://netcdn.online/app/479516143/is-minecraft-education-edition-free-game-hack. While no scripts were extracted, the PDF structure and embedded links strongly suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.online/app/479516143/is-minecraft-education-edition-free-game-hack In PDF document text
    • http://libsmpn1balongpo.sch.id//repository/pokemon-go-free-play-online-without-downloading_GM1094591345.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/moonactive-free-spins_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spins-cash_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/minecraft-windows-10-key-free_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spins-link-download-free_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/minecraft-114-4-download-free_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/free-roblox-accounts-pastebin-2021_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/aimbot-download-roblox_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-hack-tool-for-pc_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-game-hack-link_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-in-app-purchase-hack_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/best-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005343.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5343 30464 bytes
SHA-256: 2181a0f64495bb2df8c276e03ebc6c81f12d4e366a752d9b03023fe18c3bfb3f
font_01_sfnt_off000096b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96B9 18024 bytes
SHA-256: 860599eb2378c11ce9f069b8b1214934614c40beead093e3b25ec1c42f286d72

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