Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ae57506b980d5bc…

MALICIOUS

PDF

48.0 KB Created: 2021-06-03 06:03:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 53cb8380fad536fd2fda7677965190fa SHA-1: c6878bbf948551735a6e224d82331a75ab3216d6 SHA-256: 5ae57506b980d5bc0d67d55144ee1409661bac74c8dc931eea9dbe9bcd60d5be
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF document employs a lure for game hacks and generators, directing users to a known malicious redirector. The document explicitly instructs the user to copy and paste content into a shell context, indicating an attempt to trick the user into executing malicious commands. The primary URL, https://netcdn.online/app/479516143/wurst-download-game-hack, is associated with this malicious redirection and download attempt.

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/wurst-download-game-hack In PDF document text
    • http://library.stieyapan.ac.id//repository/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-free-spin-link-today-16-11-2021_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/113-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-unlimited-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-level-4_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/pubg-4all-cool-20219-uc_GM1330123889.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/como-hackear-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/how-to-get-free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-3rd-village-free-2021-gift-card_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/pokemon-go-basic-vs-premium_GM1094591345.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/hack-crack-for-coin-master-currency_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000053bc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53BC 25388 bytes
SHA-256: 2252c4ddd33037c78aa67bb6adaeb1316ac041531ff269359e88180d1393c494
font_01_sfnt_off00008d3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D3A 3288 bytes
SHA-256: 35db303b98edb412ddb5a7e69659a1c0332803148b1f53ebfb277fbeabb79116
font_02_sfnt_off00009811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9811 18508 bytes
SHA-256: fa1f483b34cb572f7f62a7150fe0d508507468ba2dbe973ec2c8b024440d6681

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