Malicious PDF — malware analysis report

Static analysis result for SHA-256 48352022b8c88cdc…

MALICIOUS

PDF

33.1 KB Created: 2021-07-03 11:51:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 45ba06110efb3fa06edae68ff21f7a3f SHA-1: 87f09ef6095b340301a92c9de62af48774fff202 SHA-256: 48352022b8c88cdc3c348077cb3ed1c1c3febf6bee29286314c3fae03541fe8a
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.tw/app/431946152/free-robux-cards-game-hack PDF link annotation
    • http://www.pspmrsmbpulau.com/opac/repository/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://pspmrsmbpulau.com/opac/repository/free-hats-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/websites-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/roblox-hax_GM431946152.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/super-hero-adventures-online-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/noob-vs-pro-vs-hacker-roblox-pet-simulator_GM431946152.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/guuud-info-free-robux_GM431946152.pdfIn PDF document text
    • https://pspmrsmbpulau.com/opac/repository/roblox-pet-simulator-pet-hack_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/roblox-hack-extension_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/roblox-free-items-2021_GM431946152.pdfIn PDF document text
    • https://pspmrsmbpulau.com/opac/repository/download-a-free-gater-for-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/coin-master-app-free-download_GM406889139.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/how-to-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/cual-es-el-hack-para-tener-robux-gratis-en-robolox_GM431946152.pdfIn PDF document text
    • https://pspmrsmbpulau.com/opac/repository/can-you-generate-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/free-version-of-roblox_GM431946152.pdfIn PDF document text
    • https://pspmrsmbpulau.com/opac/repository/free-robux-hack-on-phone-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/app-for-free-spins-on-coin-master_GM406889139.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_off00002d76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D76 21560 bytes
SHA-256: f50d3e1f38182621339f289a7bc122caf6a78820b752f2e4a8c817a866e371ed
font_01_sfnt_off00005ccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CCF 18888 bytes
SHA-256: 6c6de0ceaed5fc014d3dcce92ca1cb896bf7995edf6e50a0e815779b2f83a656

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