Malicious PDF — malware analysis report

Static analysis result for SHA-256 485c8c2f21954022…

MALICIOUS

PDF

227.6 KB Created: 2021-07-05 15:01:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: eac1c4c163d115915cc16504d4ec6e8d SHA-1: e554805069469b150e6a90058a5376bda1200395 SHA-256: 485c8c2f219540222ab14ecd38b1c734a7156ea9bdbfc78849256e468de1008f
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document presents a lure for free game items, specifically 'Pokeballs' for Pokemon Go, directing users to a URL that likely hosts a fake CAPTCHA or human verification prompt. This is a common social engineering tactic to trick users into downloading malware or providing credentials. The presence of multiple game-hack related URLs reinforces this social engineering theme.

Machine Learning

  • Nyx PDF Classifier clean score 0.0118

Heuristics 7

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/1094591345/how-to-get-free-pokeballs-in-pokemon-go-game-hack PDF link annotation
    • http://stmb-multismart.ac.id/perpustakaan/repository/nuevo-hack-para-atravesar-paredes-actualizado-roblox-2021_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/coin-master-game-hunters-club_GM406889139.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/toradora-roblox-roblox-t-schirts-free_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/how-to-get-the-penguin-suit-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/how-to-get-roblox-free-aventures_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/hack-roblox-pet-simulator_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/robux-hack-no-survey-no-offer_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/roblox-free-play-on-google_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/roblox-robux-hack-console_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/tiktok-free-book_GM835599320.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/how-to-hack-roblox-games-on-ios_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/roblox-stats-hack_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/free-robux-2021-no-human-verification-pc_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/mcpe-master-hack-coin-apk_GM406889139.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/how-to-get-free-hats-in-roblox-2021_GM431946152.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
stream_023_off0003223f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3223F 25576 bytes
SHA-256: 7c77d0eb68d1c7728805b3189f9ef32135ebccdcf006cb7102db90172d3ccf71
font_01_sfnt_off00035e31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35E31 18860 bytes
SHA-256: 911848327157fcfdcab91a45d3396cdc10a9de361e0c9039509f4b7454dce9ed

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