Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc0fd1496cadbc0c…

MALICIOUS

PDF

34.2 KB Created: 2021-06-26 11:30:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 872959a0cc8f0f1c227b4bb7e8615ca1 SHA-1: 7181d61067fa0b52d6fb0fe2623244a2a192ac55 SHA-256: bc0fd1496cadbc0c885fc02da8a0010dfa52418da7c4ff585ed282ed309b3478
82 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and a lure related to 'free Robux' and game hacks, strongly suggesting a phishing or malware distribution attempt. The primary URL, http://netcdn.co/app/431946152/free-robux-promo-codes-for-roblox-game-hack, is likely the destination for a malicious payload or a phishing page. While no scripts were explicitly extracted, the PDF structure and embedded links indicate a potential for exploitation, possibly leading to client execution.

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/free-robux-promo-codes-for-roblox-game-hack PDF link annotation
    • https://library.itn.ac.id/perpusitn/repository/redline-cheats-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-coin-spin_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-how-to-look-at-the-free-music-selection_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spin-link-today-download_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-et-free-robux-april-2021-pc_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/arcane-legacy-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-free-download-no-virus-and-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-hack-minecraft_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/rise-of-nations-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-p_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-skins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spins-link-no-verification-code_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/try-minecraft-free_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-coins-for-flip-master-online_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coinmaster-rewards_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_off00003033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3033 21588 bytes
SHA-256: b4aa22d21e81739a6814cdb060f1b21d4b5bc1cdb0d3ab21cf55ac1d30459aa7
font_01_sfnt_off00005fd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD9 19380 bytes
SHA-256: 334890e5694b3646ade0949c7b64bcffbe81ffabc8e45a71cb7e4b1561ecd96d

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