Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e41b73de0a41b30…

MALICIOUS

PDF

44.8 KB Created: 2021-06-03 10:37:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7e51100388a6ad08e7c825ad1b0ba7e4 SHA-1: 4b410f6874a9982b81bfd73261c40c518862bde6 SHA-256: 1e41b73de0a41b30389e3f70e9f9c5893b09aa51729d8bf90aac1c5104bd576c
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to 'free Robux' and impersonates Microsoft to trick users into clicking a malicious link. The primary link, https://netcdn.online/app/431946152/how-to-get-robux-fast-game-hack, is designed to redirect users to potentially harmful content or phishing pages. No scripts were extracted, but the PDF structure and embedded URLs strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.online/app/431946152/how-to-get-robux-fast-game-hack.
  • 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 https://netcdn.online/app/431946152/how-to-get-robux-fast-game-hack PDF link annotation
    • http://perpus.masda.ac.id/repository/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-get-minecraft-for-free-2021_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/robux-earning-websites_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/hack-coin-master-apk-31_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-spins-on-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/spin-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/pubg-uc-and-skins-smm-panel_GM1330123889.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-game-legitimate-hack-without-signing-up-or-shareing_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-spin-coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-pe-free-download-android_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-free-spons-apk-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-minecraft-videos_GM479516143.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_off000051a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51A5 25188 bytes
SHA-256: 2793bbb426b4777cc9e0f7ac0672410e8d60c9f133275ddc2c74f95d4984c25e
font_01_sfnt_off00008b87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B87 18512 bytes
SHA-256: 4dc4e0cad61ef76bfeae7ffde68b6df350db2c75fc0ee4ed4c08fe52eaa40496

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