Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa3d200c1db7fa93…

MALICIOUS

PDF

33.5 KB Created: 2021-06-30 03:13:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b1d24c6cc7cedf62aed23493f099cc2e SHA-1: ab0deb789ec1bd95d260084a5220d6a289de058c SHA-256: aa3d200c1db7fa934b0b2477970ddd1c3ef938f8fc562f9cf39412a004500bb2
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.co/app/431946152/how-to-use-roblox-jailbreak-auto-rob-hack-game-hack PDF link annotation
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-free-bc-in-roblox-patebin_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/my-account-got-hacked-what-do-i-do-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-free-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/hack-midoriya-full-cowl-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/adopt-me-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/pokemon-go-free-coins-promo-code_GM1094591345.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-raf-free_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-sexually-abused_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-hacked-codes_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-cheating-text-scripts_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-spins-coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-city-tycoon-2-cheats_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/como-volar-en-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-roblox-hack-us_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_off00002d3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D3A 21688 bytes
SHA-256: 4db1f0d5a805b622d9e9bb9702a8afd8ed0c0c0e201775d8359fe852c5f8f4aa
font_01_sfnt_off00005cc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC2 19348 bytes
SHA-256: 963343c5318e2a03bd86d2daf6a8039490caf4cab0615a128690c6e1ddb8f9a0

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