Malicious PDF — malware analysis report

Static analysis result for SHA-256 cde462db1d7fc331…

MALICIOUS

PDF

44.5 KB Created: 2021-05-16 13:54:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b337e018e567867b442a3a0fffdb4e85 SHA-1: 218f8ff9decb8ad7b9feb6d1866861b4970710f1 SHA-256: cde462db1d7fc331273550aa6eeec47deeebd64c5f05b8729efa67589776b04a
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 0.9632

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/406889139/need-free-spins-for-coin-master-game-hack PDF link annotation
    • http://www.lowrange4x4.co.za/images/coin-master-coin-link_GM406889139.pdfIn PDF document text
    • http://www.lowrange4x4.co.za/images/unlimited-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.lowrange4x4.co.za/images/minecraft-anarchy-server-no-hacks_GM479516143.pdfIn PDF document text
    • http://www.lowrange4x4.co.za/images/coin-master-how-to-get-free-pet-food_GM406889139.pdfIn PDF document text
    • http://www.lowrange4x4.co.za/images/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • http://www.lowrange4x4.co.za/images/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://www.lowrange4x4.co.za/images/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.lowrange4x4.co.za/images/roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.lowrange4x4.co.za/images/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://www.lowrange4x4.co.za/images/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://www.lowrange4x4.co.za/images/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • http://www.lowrange4x4.co.za/images/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://www.lowrange4x4.co.za/images/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.lowrange4x4.co.za/images/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.lowrange4x4.co.za/images/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.lowrange4x4.co.za/images/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.lowrange4x4.co.za/images/free-minecraft-realm-codes_GM479516143.pdfIn PDF document text
    • http://www.lowrange4x4.co.za/images/free-roebucks-com_GM431946152.pdfIn PDF document text
    • http://www.lowrange4x4.co.za/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.lowrange4x4.co.za/images/free-robux-giveaway-live_GM431946152.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_003_off000048f1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48F1 24688 bytes
SHA-256: 014cf07a4df964564fa8e42b702ca2f7abd0c7a0a952fba9720c47352f42716d
font_01_sfnt_off0000817f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x817F 2980 bytes
SHA-256: 66de8b3278b19ce338bd39d802648449c21b92b9d4364fab864b10a133f6b3de
font_02_sfnt_off00008bd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BD4 18060 bytes
SHA-256: f5afe9341e435eaae5b93957743f0cc95999c7a361f3d67d13bd26335a6563d8

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