Malicious PDF — malware analysis report

Static analysis result for SHA-256 982affcdbdf42444…

MALICIOUS

PDF

49.3 KB Created: 2021-06-03 22:19:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3dc1ce431a176e57c92b37f139a9c307 SHA-1: 732944d9a5e019837a845280ad70d9d7609e7064 SHA-256: 982affcdbdf42444a70684c4974f7a322df6db9f45d256f4079d2026faad66ae
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/431946152/how-to-get-a-lot-of-robux-game-hack PDF link annotation
    • http://lib.fekon.untad.ac.id/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-apk-hack-35-8_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-official-website_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/hack-coin-master-android-2021_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/easy-points-gg_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/robux-earner_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-earn_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/robux-download_GM431946152.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_off00005325.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5325 28280 bytes
SHA-256: 3e899aec03884bf8b1d59ab7c55da4247462ecbf8e38fc3858debf1a1b8f9872
font_01_sfnt_off0000944f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x944F 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off00009e3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E3A 18120 bytes
SHA-256: 042a1857860dc696e0dbe9c9f325bf17f11d6ec89e659ed0d278e4175a2693af

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