Malicious PDF — malware analysis report

Static analysis result for SHA-256 b14c7fb8a5f26652…

MALICIOUS

PDF

37.5 KB Created: 2021-06-28 12:07:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 465ba0e3895403a8811af261fcb69d78 SHA-1: 4b45f261d8b5a90d88df761874467aa56c38b146 SHA-256: b14c7fb8a5f266523a621f593c7f91627b1560168e24112a64da237058cfc63c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious websites, masquerading as game hacks and generators. The ML classifier strongly flagged this PDF as malicious, and heuristic rules indicate it links to known malicious redirector infrastructure. The document body and extracted URLs suggest a lure for users interested in free in-game currency or cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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/roblox-cheater-game-hack In PDF document text
    • http://perpus.wdh.ac.id/repository/do-you-get-free-roblox-builders-club-on-the-weekend_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/working-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-attack-madness-hack_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-items-with-inspect-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-arsenal-hacks_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/www-robux-redeem_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/anti-roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-com-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-studio-free-scripts_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-get-free-robux-crard-codes_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-free-spins-hacktman_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/minecraft-hack-client-download_GM479516143.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
stream_002_off00003a96.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3A96 23020 bytes
SHA-256: 47369a88ec71cb0c383ca04cf36a081d9fdf63aa44be6aaefbdcb34e9c722ad4
font_01_sfnt_off00006eb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB7 18756 bytes
SHA-256: 4c72507a754f1b34fd3f1358a54d6542648505544669007e4f15bb1c33280497

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