Malicious PDF — malware analysis report

Static analysis result for SHA-256 6475e9ba9ac91329…

MALICIOUS

PDF

34.6 KB Created: 2021-07-06 09:37:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6f480555aa39f158d5e403bfac7c5b1f SHA-1: 37e65862ca9dcfc16eba85fff155be5deee83abf SHA-256: 6475e9ba9ac913295827efd7ae07389ad04b5ca96d557b78bbc216737bc72a2b
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/roblox-free-wings-game-hack PDF link annotation
    • http://e-library.smkn1jombang.sch.id/repository/minecraft-launcher-free_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/top-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/robux-game-com_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/oprewards-com-earn_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/pokemon-go-free-evolve-after-trade_GM1094591345.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/village-4-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-get-free-clothes-roblox-2021_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-robux-by-bananaman_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-robux-master_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-gamepass-roblox-script-not-patched_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-roblox-promo-codes-for-robux_GM431946152.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_off0000317c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x317C 22028 bytes
SHA-256: 844a53bd30814e01c4eda0f2feb465ea48d5e95371e6f30aa6bcbd370fc7316c
font_01_sfnt_off00006248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6248 18968 bytes
SHA-256: d91fe945418f85379dec2f7be6f1e2f87923cf86a97dd98021675ad5a3e5229b

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