Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cca67ce2cdfa3ed…

MALICIOUS

PDF

34.5 KB Created: 2021-07-04 12:51:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 1d171822c5901bb3b59a867c4f5abe6f SHA-1: 3738231e9c1fdddc42bbb2bfe27c05e644fa3faf SHA-256: 6cca67ce2cdfa3ed145064af9d98865888b46e4f3bb5b2a0065bc1e3ea44f375
82 Risk Score

Malware Insights

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

This PDF document contains multiple embedded URLs, with a primary lure pointing to a 'free coin master game hack'. The ML classifier strongly indicated maliciousness, and the PDF structure includes links designed to trick users into downloading further content. No scripts were extracted, but the embedded URLs suggest a phishing or social engineering attack aimed at delivering a payload.

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/406889139/free-coin-master-game-game-hack PDF link annotation
    • http://www.myresidence.lu/userfiles/files/hackaron-com-roblox_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/roblox-lawsuit_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/free-robux-generaters_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/pokemon-go-free-hack_GM1094591345.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/free-lvl-7-roblox-exploit_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/inject-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/coin-master-link-for-spins_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/how-to-hack-roblox-accounts-with-inspect-element_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/bucks-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/how-to-advance-roblox-hair-for-free_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_off00003099.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3099 22980 bytes
SHA-256: 44f911aa33265102e335b4a2ef728f3044730f008ca5f2edb9f76f7166963ba0
font_01_sfnt_off00006443.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6443 18260 bytes
SHA-256: eb8f7030a523e9f637c9ccd119b58878e7257f2b60cbea24b3662613c8a6fe8f

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