Malicious PDF — malware analysis report

Static analysis result for SHA-256 63ecd37ec82d97f7…

MALICIOUS

PDF

47.6 KB Created: 2021-06-04 05:18:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: bcfa0370bb172c6114c3ba4840693694 SHA-1: 84349b51c625b9110e686d352106f60b49f781f2 SHA-256: 63ecd37ec82d97f76440eec5e6b206b243cc5af46ed927f7cd2b20fa69514c84
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure related to game hacks and free items, directing users to external URLs. The ML classifier strongly indicated maliciousness, and the presence of external links suggests a potential download or redirection to a malicious payload. No scripts were extracted, limiting further analysis of execution methods.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/free-t-shirt-roblox-game-hack PDF link annotation
    • https://perpustakaan.stami.ac.id/repository/rbx-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/free-minecraft-client_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/make-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/pokemon-go-free-daily-box_GM1094591345.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/websites-for-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/free-role-in-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/40-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/get-free-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/download-coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/near-tiktok-free-account_GM835599320.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-hacks-no-human-verification_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/how-to-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/free-spins-in-coin-master-2021_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_off00004f8d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F8D 25360 bytes
SHA-256: 0b71ccfa8731e8baf8b891117698ce0120645b005c25bb78b6ed1dfb7d2d060e
font_01_sfnt_off000089b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89B7 4008 bytes
SHA-256: 982b414f0c1a2f334cbcfa74b37c63e373061dba1812816e371faa6e65399a16
font_02_sfnt_off00009746.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9746 18340 bytes
SHA-256: 2d05e254e9d88d662aa6e20ca1badb4d8e3c9bd921fc5d0ad34db7ef5b503ac5

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