Malicious PDF — malware analysis report

Static analysis result for SHA-256 8703eed975a9c63e…

MALICIOUS

PDF

35.0 KB Created: 2021-06-30 05:36:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 5c956cd6f0ee657cbd774341bfc7d020 SHA-1: 5f878023a07e1509f4c32f04264082519e6acafb SHA-256: 8703eed975a9c63e0e1ca257205917eae719fdcdf9183d6ffd140803c875f388
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a high-severity heuristic firing for a 'GAME_HACK_REDIRECT_LURE', indicating it directs users to a site promising free game hacks. The embedded URL 'http://netcdn.co/app/431946152/card-roblox-free-game-hack' reinforces this lure. While no scripts were explicitly extracted, the nature of the lure and the PDF format suggest potential exploitation or redirection to malicious content, aligning with common phishing and malware delivery tactics.

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/card-roblox-free-game-hack PDF link annotation
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-get-free-spins-on-coin-master-2021-links_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/rob-hacker-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/hacker-roblox-shirt_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/apocalypse-rising-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/prison-life-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/hack-coin-master-spin-android_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/bloxburg-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-music-id-break-free_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/ccv3-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-get-free-tshirts-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-i-have-free-wifi_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-hack-link_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-hack-tool-pc_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-do-u-use-cheat-engin-with-roblox_GM431946152.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
stream_002_off000030bc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30BC 22992 bytes
SHA-256: 1a6afc709318d676b5e13654c4e2e465a45c81837ce5cec943756d2bb61dd3cf
font_01_sfnt_off00006467.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6467 18824 bytes
SHA-256: a75cf91311500902e49fca6f594d9cf3114c9975f97179169c8c654f0e067877

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