Malicious PDF — malware analysis report

Static analysis result for SHA-256 609e88dbd2c6852c…

MALICIOUS

PDF

34.5 KB Created: 2021-06-29 05:20:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 9afba8010f944f5d5e58b7316e3f57fb SHA-1: 177955f5a1801e44555a4fa934c930826c5cfd0d SHA-256: 609e88dbd2c6852cbdfd1a86e9b46847e9f4ba01eef608d5462dc6eefb74df0e
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.co/app/431946152/roblox-rap-hack-game-hack PDF link annotation
    • https://elearning.man-purbalingga.sch.id/__statics/gudangsoal/files/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • https://elearning.man-purbalingga.sch.id/__statics/gudangsoal/files/speed-hack-roblox-2021-may_GM431946152.pdfIn PDF document text
    • https://elearning.man-purbalingga.sch.id/__statics/gudangsoal/files/roblox-earn_GM431946152.pdfIn PDF document text
    • https://elearning.man-purbalingga.sch.id/__statics/gudangsoal/files/roblox-free-website_GM431946152.pdfIn PDF document text
    • https://elearning.man-purbalingga.sch.id/__statics/gudangsoal/files/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man-purbalingga.sch.id/__statics/gudangsoal/files/coin-master-free-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://elearning.man-purbalingga.sch.id/__statics/gudangsoal/files/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man-purbalingga.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://elearning.man-purbalingga.sch.id/__statics/gudangsoal/files/coin-master-free-spins-that-really_GM406889139.pdfIn PDF document text
    • https://elearning.man-purbalingga.sch.id/__statics/gudangsoal/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man-purbalingga.sch.id/__statics/gudangsoal/files/hack-how-to-get-the-old-events-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man-purbalingga.sch.id/__statics/gudangsoal/files/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • https://elearning.man-purbalingga.sch.id/__statics/gudangsoal/files/justnow-freerobuxcodes2021working_GM431946152.pdfIn PDF document text
    • https://elearning.man-purbalingga.sch.id/__statics/gudangsoal/files/new-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man-purbalingga.sch.id/__statics/gudangsoal/files/new-roblox-jailbreak-hack-free-money_GM431946152.pdfIn PDF document text
    • https://elearning.man-purbalingga.sch.id/__statics/gudangsoal/files/how-to-get-a-free-unicorn-on-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man-purbalingga.sch.id/__statics/gudangsoal/files/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man-purbalingga.sch.id/__statics/gudangsoal/files/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man-purbalingga.sch.id/__statics/gudangsoal/files/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • https://elearning.man-purbalingga.sch.id/__statics/gudangsoal/files/haktuts-coin-master-free-spin-link_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
font_00_sfnt_off00002fee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FEE 22452 bytes
SHA-256: 59320847f5c85d446291aaf81eeeebca943e32eaeedb83854fb6d9e428cb4548
font_01_sfnt_off00006246.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6246 18832 bytes
SHA-256: 8dcb5984e2805d6266917f7cf598fad34fa7876d9c67856c21cd3ab09b964730

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