Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ae3fe3e8f6278bb…

MALICIOUS

PDF

43.0 KB Created: 2021-05-15 12:30:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7ec8c7d1666b7f30adddf62adcee84e1 SHA-1: 547dcebc40ba36ae8868a9a3bf7003be46138b52 SHA-256: 9ae3fe3e8f6278bbd37f40fa93f7706fc25b44efcedb34e1c7f2190daed35a15
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/free-robux-hack-generator-game-hack PDF link annotation
    • http://digilib.akbid-alsuaibah.ac.id/repository/chisel-and-bits-mod-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/how-to-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/free-spin-coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/coin-master-hack-app-android_GM406889139.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/free-spins-on-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/coin-master-computer-hack_GM406889139.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/best-way-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/coin-master-free-spins-generator-no-verification_GM406889139.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/free-card-link-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/free-pet-snacks-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/free-minecraft-codes-2021_GM479516143.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/coin-master-cheat-codes-free_GM406889139.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_003_off00004a20.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A20 25148 bytes
SHA-256: def933c571e63b72b599c4602ab1dd372d77892a26195b84d6f1cc3724d3084d
font_01_sfnt_off000084da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84DA 18516 bytes
SHA-256: ac45002ee2c78c55a094f6344a5e95abe10f4ed7f4298fc77d5376065a98214b

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