Malicious PDF — malware analysis report

Static analysis result for SHA-256 a54a8868d3fefa45…

MALICIOUS

PDF

44.0 KB Created: 2021-06-03 14:06:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 01c87efd3d629e05b65fb33c58d331c8 SHA-1: b51fdec698c4275f26deefe0a1ebbce719919fc3 SHA-256: a54a8868d3fefa45ed7ceccd37012b8c6a6900676abaa41d0de5812332c6f9c3
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 0.9865

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/coin-master-free-spins-link-no-verification-game-hack PDF link annotation
    • http://lib.untad.ac.id/repository/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-hack-no-verification-no-signup_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/all-free-promo-codes-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/pokemon-go-free-redeem-codes_GM1094591345.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-hack-version-download-2021-ios_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/hacks-para-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/my-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-free-gold-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-free-spin-27_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/microsoft-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-hack-tool-pc-download_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000052ac.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52AC 24380 bytes
SHA-256: 3811bacc68ee771917ac01dc1f2e38362d2a927090871f100add1c6f7354c7fa
font_01_sfnt_off000089c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89C1 18188 bytes
SHA-256: 9c028cabc1bb5e28941c56192a15062bca5e24978f6557b783656291ce4b4993

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