Malicious PDF — malware analysis report

Static analysis result for SHA-256 2413f0acae09c3d2…

MALICIOUS

PDF

227.2 KB Created: 2021-07-05 21:46:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: dcba1439f2cf747c9737177bdf9ae98e SHA-1: 010f6954f596e4d35d5b869ce5f11c6545ffee56 SHA-256: 2413f0acae09c3d224e1a738809ac57ae1d2705e360c542fb328a913a27a40e2
172 Risk Score

Malware Insights

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

The PDF document contains multiple high-severity heuristics indicating social engineering lures, including a fake CAPTCHA, a browser extension installation lure, and a game hack redirect. The primary URL, http://netcdn.tw/app/1094591345/pokemon-go-free-app-game-hack, is directly linked to these lures, suggesting it serves as the initial point of download for a malicious payload. The document body, though heavily obfuscated, contains references to 'Pokemon Go Free App' and the same URL, reinforcing the lure.

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/pokemon-go-free-app-game-hack PDF link annotation
    • https://elibrary.ikhac.ac.id/repository/wurst-hacked-client_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-hack-roblox-safe-way_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/lua-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/como-conseguir-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-ps4-games-like-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-jailbreak-money-hack-december-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/this-app-gives-you-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-robux-hack-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/robux-hack-me_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/me-enfrente-a-un-hacker-de-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-coin-master-spins-and-coins-for-daily_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/skrillix-wolf-roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-dungeon-quest-hack-script-ability-spam_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-hack-roblox-account-top-9-ways_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-roblox-hacks-co_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-be-a-vip-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/fake-robux-generator-for-free_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/give-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 4

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_off00032194.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32194 25576 bytes
SHA-256: d521bcea35908912be44125d00db3327c4dfd89739489dc6ce8a8aaf4a430c20
font_01_sfnt_off00035d92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35D92 18532 bytes
SHA-256: fa6649abcd9ca06b5af2626126c36d289b1fe590ceb0042e13f79c54d30c02b7

Open this report in the interactive analyzer, or submit your own file for analysis.