Malicious PDF — malware analysis report

Static analysis result for SHA-256 581172c53c789e38…

MALICIOUS

PDF

34.1 KB Created: 2021-07-04 01:17:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 9ead6685c3f8f2e78190a5abf89c1639 SHA-1: 1285412dcb601f141fca1289ec1e43ff5a677da2 SHA-256: 581172c53c789e38e5dfbdb7edd073f495c5caaf8e23462427bf5fed6bb2d5f9
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/431946152/ways-to-get-free-robux-game-hack PDF link annotation
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-phantom-forces-cr-cheat-engine_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-accounts-roblox-jailbreak-money_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-get-free-robux-easy-youtube_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/pokemon-go-free-1km-buddy_GM1094591345.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-t-get-free-robux-for-computer-nly_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-coin-master-androd-cheats-2021_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-get-free-shirt-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-ghost-simulator-cheat_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/1x1x1x1-roblox-id_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-hackcom-xyz_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/hack-roblox-script-pastebin_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/how-to-use-wurst_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-how-to-get-free-hats_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/tiktok-free-up-space_GM835599320.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-robux-in-games_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_off00002d18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D18 22592 bytes
SHA-256: 3bcfc72b3a7eb2803b0970f836bef9918ef732d6d7660f184ed481465b6a37b5
font_01_sfnt_off00005f8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F8C 19196 bytes
SHA-256: 96331d0996f68a985869c858ea36cc40aa482b0fedd10a8c06058efa80dfe966

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