Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3e98171ad57d462…

MALICIOUS

PDF

33.0 KB Created: 2021-07-04 18:09:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 597b66fb9a0123018e5441406ccae958 SHA-1: 3c3e7b9324a37d991d4c6979103ad374457cccc9 SHA-256: c3e98171ad57d462a5532275bd4e148c423714ac3a3570aed4303e15277ce50e
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 0.9980

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 http://netcdn.tw/app/431946152/free-roblox-gear-game-hack PDF link annotation
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-cards-hack-2021_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/f-free-robux_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coinmaster-free-cards_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coinmaster-spin-ml_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/roblox-jailbreak-money-hack-check-cashed_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/minecraft-bedrock-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/radgoll-hack-roblox_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-gfx-roblox_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-to-play-bloxburg-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/hack-coin-master-game-apk_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/roblox-pain-exist-hack_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/roblox-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-spins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/roblox-hack-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/wurst_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
font_00_sfnt_off00002d2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D2B 21760 bytes
SHA-256: 6fbde2643249662e68b9c37e93ee547d80dc855b777dca5bd4b39e66a9247902
font_01_sfnt_off00005d0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0D 18652 bytes
SHA-256: 24c9f35d284898d8714280a7657e5cafbb56a62ebf238f811ca71aaae1d65f3a

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