Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bbf948b7bdbc7e7…

MALICIOUS

PDF

35.1 KB Created: 2021-06-30 03:27:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: c97e208fe2373c013a638ebe71979d85 SHA-1: 6d07d188ea5b8f31d07908d778d2f72b734a0dcd SHA-256: 3bbf948b7bdbc7e705335048a7e3df9d7de99e2860149e0bcd42c7dc1c3c0c85
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The primary URL, http://netcdn.co/app/431946152/get-free-robux-without-downloading-anything-game-hack, is identified as a malicious redirector. The document body and embedded URLs reinforce the theme of exploiting game mechanics, likely to trick users into downloading further malware or engaging in credential harvesting.

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/get-free-robux-without-downloading-anything-game-hack In PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/how-to-cheat-on-roblox-got-talent_GM431946152.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/pastebin-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/how-to-get-robux-for-free-simpl-steps_GM431946152.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/roblox-cookie-hack_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/roblox-hack-ninja-assassin_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/como-hackear-adopt-me-en-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/roblox-free-vip-server_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/hacked-warning-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/how-to-get-free-robux-on-roblox-ipad_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/roblox-hack-exploit_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/free-roblox-accounts-with-robux-that-work-october-2021_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/how-do-i-get-robux_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/free-robux-gift-card_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_off00002f25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F25 22324 bytes
SHA-256: 36d1423627b8719cf00ea2068831c85dfdd0ac55337c85fef68fc630238582ff
font_01_sfnt_off000060f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F0 20064 bytes
SHA-256: 8a78b2b67ab7d26a4da03bef56fbed182668ca365a3b8ba1281178f019ce6e85

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