Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b01ecc8c16ada73…

MALICIOUS

PDF

44.0 KB Created: 2021-06-03 14:31:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: d1a6dbf2a757f723df7e5af81d4112f2 SHA-1: 50b91f09c759c813555f7a2623fafc984bedef31 SHA-256: 9b01ecc8c16ada736670eeaf7ea31e3906853172f17a23b33c1804f5e1f7b394
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting game hacks and generators. The ML classifier also flagged this PDF as malicious. The presence of a visual download button further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/431946152/roblox-avatar-tester-game-hack In PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-3rd-village-free-2021-gift-card_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/minecraft-free-version_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-free-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/chisel-and-bits-mod-pe_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-free-spins-april-2021_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-mod_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-you-get-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://collectrobuxIn 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
stream_004_off000050af.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50AF 24636 bytes
SHA-256: 277620127dc8177b6ce1e0491bc83b3a98daa0a328964aab54944343a29a1679
font_01_sfnt_off00008950.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8950 18228 bytes
SHA-256: 202894cb6a5bec519cb1aff7aa26487a29ece32a0cf0ce5d4249a64a0c567dc3

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