Malicious PDF — malware analysis report

Static analysis result for SHA-256 5acc7d08cd5f69d8…

MALICIOUS

PDF

49.2 KB Created: 2021-06-03 05:02:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: fd050b7d678095f0876f0958b5e3d4f3 SHA-1: 8d9f79f5752b25bb17073591780fa6e258d125a3 SHA-256: 5acc7d08cd5f69d8ce3922caa6ef6b50b814773c354ebf2434071e12744fcdfe
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 0.9796

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-fan-page-giveaway-game-hack PDF link annotation
    • https://library.institutpendidikan.ac.id/repository/how-to-make-clothes-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-hack-download-android_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/minecraft-java-edition-key-free_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-coins-facebook_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/gold-card-coin-master-free_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/master-coin-hack-mod_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-gift-hack_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-easy_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000545b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x545B 28172 bytes
SHA-256: 79c6a57d494bb958f0f66788f520ee74471c8684de2c527eb3762156aa4e8f0c
font_01_sfnt_off000092b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92B4 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off00009c9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C9F 18608 bytes
SHA-256: 854f4b4211f415c7f5aa47802dca21b81c8c3685ea946d21c48c5daf2079a60e

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