Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab5713a08bb6e0ac…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 07:33:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 83a21253600d811abf4c13d55d2e998f SHA-1: 1308f182bf83c2ed1676b0a7298228b6ce251e1c SHA-256: ab5713a08bb6e0acd3bffd724bfadce7a3afb103c16a9c2e67e07179931623a6
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/479516143/minecraft-games-to-play-for-free-game-hack PDF link annotation
    • http://www.advanceenglish.com.au/uploaded_files/userfiles/files/how-to-sell-roblox-shirts-for-free_GM431946152.pdfIn PDF document text
    • http://www.advanceenglish.com.au/uploaded_files/userfiles/files/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://www.advanceenglish.com.au/uploaded_files/userfiles/files/freespinandcoin_GM406889139.pdfIn PDF document text
    • http://www.advanceenglish.com.au/uploaded_files/userfiles/files/free-robux-recieve-instantly-no-survey_GM431946152.pdfIn PDF document text
    • http://www.advanceenglish.com.au/uploaded_files/userfiles/files/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://www.advanceenglish.com.au/uploaded_files/userfiles/files/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • http://www.advanceenglish.com.au/uploaded_files/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.advanceenglish.com.au/uploaded_files/userfiles/files/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://www.advanceenglish.com.au/uploaded_files/userfiles/files/minecraft-free-games-no-download_GM479516143.pdfIn PDF document text
    • http://www.advanceenglish.com.au/uploaded_files/userfiles/files/hack-roblox-tower-battle_GM431946152.pdfIn PDF document text
    • http://www.advanceenglish.com.au/uploaded_files/userfiles/files/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://www.advanceenglish.com.au/uploaded_files/userfiles/files/best-free-fortnite-roblox-game_GM431946152.pdfIn PDF document text
    • http://www.advanceenglish.com.au/uploaded_files/userfiles/files/free-robux-hack-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.advanceenglish.com.au/uploaded_files/userfiles/files/roblox-waepon-simolator-hack_GM431946152.pdfIn PDF document text
    • http://www.advanceenglish.com.au/uploaded_files/userfiles/files/60-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.advanceenglish.com.au/uploaded_files/userfiles/files/safe-hack-for-coin-master-android_GM406889139.pdfIn PDF document text
    • http://www.advanceenglish.com.au/uploaded_files/userfiles/files/how-to-hack-roblox-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://www.advanceenglish.com.au/uploaded_files/userfiles/files/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdfIn PDF document text
    • http://www.advanceenglish.com.au/uploaded_files/userfiles/files/best-hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.advanceenglish.com.au/uploaded_files/userfiles/files/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000336c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x336C 22452 bytes
SHA-256: ec8991731acd0a7b4acd8fe7136d28a3193e2048fdbb1919dc5f7452b7ec4829
font_01_sfnt_off0000645e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x645E 18664 bytes
SHA-256: 0725e80f6a4e873f5ab50492ee12f8fb405ccf899727b50dbe4c632344f48946

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