Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fdfaff2a81dc8e6…

MALICIOUS

PDF

47.3 KB Created: 2021-06-03 10:06:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 01c4fe0d4af121cc90a679025e0bd4ec SHA-1: 799b2f29e8afffcd59abd6ded2ee4dce6bf8a999 SHA-256: 0fdfaff2a81dc8e6a0ce13802231a2fc878feb2a347091d836c60e4e925a85f0
142 Risk Score

Malware Insights

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

This PDF document employs a common lure of game hacks and free items to entice users. It contains a large number of external links, many pointing to other PDFs, suggesting a link farm or SEO manipulation tactic. The primary URL, https://netcdn.online/app/406889139/free-spin-and-daily-news-coin-master-game-hack, is likely a redirector or landing page for malicious content. No scripts were extracted, but the PDF structure and external links indicate a malicious intent to drive traffic or potentially exploit vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/406889139/free-spin-and-daily-news-coin-master-game-hack PDF link annotation
    • http://lib.stimykpn.ac.id//repository/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-spins-for-free-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-free-cards-link-2021-today_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-gold-cards-hack-english_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-hack-2021-ios-download_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-demon_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/is-pokemon-go-free-to-play_GM1094591345.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-roblox-adopt-me-pets_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-coin-master-card-free_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-minecraft-mods-for-ps4_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-on-facebook_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-spin-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/best-site-for-free-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-java-edition-key-free_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-multiplayer-minecraft-server_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/master-coin-free-link_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_off00004f1f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F1F 26576 bytes
SHA-256: 145cc76d1609780a0a2b12db63f2be342d38f65ee9109e8e173eb9a70693c526
font_01_sfnt_off00008b51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B51 2824 bytes
SHA-256: a0d6c1ef1f7405ab05245801e4abbc2877925f97898db53811df9ab010e978fa
font_02_sfnt_off000094ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94EE 18648 bytes
SHA-256: 1b97510549e3d8fe11dfd7453b1479af326f6ce77077d5a4dbd4033950bc4681

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