Malicious PDF — malware analysis report

Static analysis result for SHA-256 acb9fb60809ee3ad…

MALICIOUS

PDF

48.5 KB Created: 2021-06-09 13:14:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 79f3cdb41b444505bbe5793d4daef674 SHA-1: 84d2adb30d62e7f9dda3565e348c72101c15a381 SHA-256: acb9fb60809ee3adab727d96b63506591ad003abc2ea1b1b444c7112dc18d1aa
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or scam attempt. The primary link directs users to 'https://netcdn.tw/app/431946152/moana-roblox-cheats-game-hack', which is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to potentially harmful content or further download stages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/moana-roblox-cheats-game-hack In PDF document text
    • http://perpus.wdh.ac.id//repository/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-ios-hack_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/how-to-get-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/fbchampion_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/microsoft-rewards-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/how-to-make-your-own-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-game-hack-version-download_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-win-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/hacks-master-coin_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/free-coins--spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/tiktok-free_GM835599320.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/real-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/robux-page_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/i-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/2021-free-spins-coin-master_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_off00004ede.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EDE 30584 bytes
SHA-256: 8812ca8fa8dc478f6b54fc1e789883a71944124f5b50415fb3861d11dfbf9cac
font_01_sfnt_off00009039.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9039 2912 bytes
SHA-256: 02b35010e2614e3cc95ac6414c49295350c91fdfcc4b4cad27ffdbc10e80df7f
font_02_sfnt_off00009a36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A36 18480 bytes
SHA-256: 84e6a8f7f2d1f7dfd22e7951d06a7c9d780df1e6fbf592fef0ef5e2365a77104

Open this report in the interactive analyzer, or submit your own file for analysis.