Malicious PDF — malware analysis report

Static analysis result for SHA-256 254c9405eca94f6d…

MALICIOUS

PDF

45.7 KB Created: 2021-06-03 05:12:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 42420d61c18e1db22565804abf93dbd7 SHA-1: ae99ec597680430884a1ed36b15e67118f4dc04a SHA-256: 254c9405eca94f6d7696724cbdc58e4381482c0910e13392fff7723b37657a5b
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 0.9797

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-spins-hack-iphone-game-hack PDF link annotation
    • http://elibrary.perludem.org//repository/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/pokemon-go-free-evolution_GM1094591345.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/minecraft-free-no-virus_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-rare-cards_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-hack-cheat-generator-d_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-google-play-promo-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/how-to-get-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-hack-1021_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/get-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-robux-without-verification-or-survey_GM431946152.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004fb4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FB4 23976 bytes
SHA-256: 532bf2d5eef43dab2e62ce01732ec923a772e87de4b639fad395634d78558b38
font_01_sfnt_off00008699.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8699 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off00009084.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9084 18060 bytes
SHA-256: e81d352b07e1ce097e3d885718cd431adb2fa9f9fe53d93d172b47981e22424a

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