Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b14af0c32fd4851…

MALICIOUS

PDF

35.6 KB Created: 2021-06-28 06:38:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 55c515179c905822fd732a0277151680 SHA-1: 558054d7aaec55919aa38ea2aff947906d5035da SHA-256: 5b14af0c32fd485157d1471f334d1300014ceb78f7140ab08371bfbaf185b750
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a high-confidence heuristic indicating it links to a 'free generator / game hack' redirector. The document body also contains similar lures and URLs, suggesting the primary purpose is to trick users into visiting potentially malicious websites. No scripts were extracted from this sample, but the embedded URLs are the primary indicators of malicious intent.

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/431946152/2021-codes-for-free-stuff-on-roblox-game-hack PDF link annotation
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/coin-master-spin-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/get-gold-coin-master-village-hack_GM406889139.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/my-roblox-account-got-hacked-what-do-i-do_GM431946152.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/pokemon-go-free-codes_GM1094591345.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/how-to-execute-a-script-with-admin-roblox-free-admin_GM431946152.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/free-roblox-hair-boy_GM431946152.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/how-to-get-free-robux-2021-2-4_GM431946152.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/roblox-murderer-mystery-2-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/coin-master-hack-spin-ios_GM406889139.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off0000336d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x336D 22220 bytes
SHA-256: ac9913352372b940554dc13af260b0af7cd00c623b1136ef0107d376924b7e19
font_01_sfnt_off000064de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64DE 19472 bytes
SHA-256: 534a863c3f9936ba4b36f8e8b30f8f07b8490b96df16cdd48839b440212650c5

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