Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec18c78ae43f9a70…

MALICIOUS

PDF

43.5 KB Created: 2021-06-03 10:46:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6ece7d47a7b517865ff15685a9f5eddf SHA-1: 56c082d8a96e9ec2cdfd528b1d7cad1c852ab3d7 SHA-256: ec18c78ae43f9a70c58ef671c57ee3a94f73e4ec800bde0bafc19cec0d2130f8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to websites offering game hacks and free currency, a common lure for phishing or malware distribution. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an intent to redirect users to potentially harmful external content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/free-spins-and-coins-coin-master-link-2021-game-hack PDF link annotation
    • http://perpus.polimarim.online/repository/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/google-moon-active_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-dominus-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/instant-robux-free_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/minecraft-xbox-360-free-download-code_GM479516143.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/jailbreak-script_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-get-free-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-scam_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-get-free-hair-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/hack-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-spins-on-coin-masters_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_off00004fdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FDD 23924 bytes
SHA-256: 13985ab037f93725543245474c6eaa9d24e8cb0469d7efd74be6e71bb12fb74b
font_01_sfnt_off00008618.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8618 18632 bytes
SHA-256: 21453a49cd95b47374badb5f9754a763ab250e679095952556df99ea2beff8a3

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