Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4ae3d21bf9e179e…

MALICIOUS

PDF

33.7 KB Created: 2021-06-24 22:35:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 9f9bcc3ce97ae902e7097f7f1b48c00b SHA-1: b302800cc93196d22b08ef3f45025bee8b3878e8 SHA-256: b4ae3d21bf9e179e06fc7e62c6ce6f3cc5dfcc125d961834d27572155a9cd433
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a high-severity heuristic indicating it links to a 'game hack' redirector, specifically mentioning 'como-hackear-los-robux'. The document body confirms this lure by including the URL http://netcdn.co/app/431946152/como-hackear-los-robux-game-hack. This suggests the primary goal is to trick users into visiting a malicious site, likely for credential harvesting or malware delivery.

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/como-hackear-los-robux-game-hack PDF link annotation
    • https://www.ak-oroslavje.hr/files/tiktok-hearts-free-2021_GM835599320.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/coin-master-hack-org_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/game-toolbox_GM479516143.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/coin-master-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/coin-master-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/cheat-in-roblox-free-robux-pc_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/reddit-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/javascript-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/how-to-get-free-spins-on-coin-master-android_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/coin-master-free-spin-link-today-download_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/legit-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/roblox-bux-free_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/coin-master-no-download-app-but-play-for-free_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/coin-master-free-spins-23-march-2021_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/robux-redeem_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
font_00_sfnt_off00002db7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DB7 22084 bytes
SHA-256: 5beb5d803bf4e319db47c4b3acb302df78688f196db5d18813e76b14fcfa9eed
font_01_sfnt_off00005ea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA5 18980 bytes
SHA-256: 627be8092b50e7a613e3e596ded00c58acf9472aaddcad4b3fbb2eb34560704e

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