Malicious PDF — malware analysis report

Static analysis result for SHA-256 578791d4ed5aa655…

MALICIOUS

PDF

34.5 KB Created: 2021-07-04 23:06:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e961829e5be62da4087f136dbd5879aa SHA-1: 8dee9d5fb0c2a267814254fefeab9ea6c17ed427 SHA-256: 578791d4ed5aa6553aedfeb1ad07053c25ea9c3e0f17152fa0ae874e62cc63ec
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 0.9980

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 http://netcdn.tw/app/479516143/free-minecraft-realm-codes-game-hack PDF link annotation
    • http://stikgiamakassar.ac.id/digilib/repository/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/microsoft-store-robux_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/roblox-club-free-robux_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/coinmaster-spin-ml-link_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-shield-hack_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/free-robux-injector_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/hack-version-of-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-free-coins-and-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/roblox-sued_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/free-shark-teeth-roblox_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-stop-attack-hack_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/how-to-hack-in-roblox-assassin-on-ipad_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/robux-legit-hack_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/discord-free-robux-server_GM431946152.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
font_00_sfnt_off00003222.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3222 22316 bytes
SHA-256: ac5db6a5171fdfef24e12bba0c023e337e3303e45425bfd761c6355e02ca9672
font_01_sfnt_off000063ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63CA 18508 bytes
SHA-256: b41cdb960d08f430dcae025247c0b7a65a811430307fe7cd8a623f6c3b070d38

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