Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6ec533a3b5cc8c6…

MALICIOUS

PDF

33.7 KB Created: 2021-07-01 13:19:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: f4ac29278551f5f0b0d0b321fd7f2a03 SHA-1: 70b44ea84e3889ed55b72e4981a119d64bf7d9db SHA-256: c6ec533a3b5cc8c672b15d61ddede61797f8a83ed8a5504626a2c2999667db4e
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/nike-roblox-free-game-hack PDF link annotation
    • https://unsla.uns.ac.id:443/pgsd/repository/roblox-project-jojo-free-items-exploit_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/hack-robux-free-2021-pastebin_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-run-roblox_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-robux-no-download-no-hack_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-apk-hack-35-8_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/real-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/roblox-racing-cheat-codes_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/how-to-get-free-robux-on-2021-ouick_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/how-much-pokemon-go-free-today_GM1094591345.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-roblox-cookies-discord_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-roblox-toy-codes-vermillion_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/games-on-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/lots-of-robux_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/how-to-get-free-hair-extensions-on-roblox_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/fre-robux-generetor_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/hacks-to-get-free-robux-on-roblox_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_off00002e53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E53 22036 bytes
SHA-256: 96ef61e6c3b1901cef093139dd99f6a06d8d510c0d19a14ffa3903f58ceae416
font_01_sfnt_off00005f1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F1C 18940 bytes
SHA-256: 51e79d5161fb2a64b603506a873bd1d922163aba6832af1db2b964df6208f903

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