Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd14ef94a3c16ff0…

MALICIOUS

PDF

44.8 KB Created: 2021-06-03 04:54:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 58d5b56025bc2f98b95c8fd584797c2a SHA-1: 0b5d26762ffc3071d000eac605f67c6034095f5c SHA-256: dd14ef94a3c16ff01e644fbd9e32460171fc0f79def85e40125b1c4fd01b207f
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/master-8-ball-pool-free-coins-game-hack PDF link annotation
    • http://perpus.unpam.ac.id/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/pubg-uc-ycom_GM1330123889.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/links-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-800-robux_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-get-free-coins-and-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-spins-for-coin-master-that-work_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-free-spins-and-coins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-minecraft-generator_GM479516143.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
stream_004_off00005260.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5260 25132 bytes
SHA-256: 6715472737739968aefb05d21e7637321a8f58c7472cbe42f6b12e88b800e575
font_01_sfnt_off00008c5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C5C 18364 bytes
SHA-256: 6e0a537e63e8d7ae493ffba7f694c0e5cbb50b5e44b8f04c82ad864b2eef269a

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