Malicious PDF — malware analysis report

Static analysis result for SHA-256 de704812609cbfc9…

MALICIOUS

PDF

44.1 KB Created: 2021-05-18 02:32:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 30e3d84e4f6bbaaee970e69e8ffdfe11 SHA-1: 4bbdab9f0588facff738c32b08cea485a60d4533 SHA-256: de704812609cbfc94f361172faa68619e7c6480d569a02ccd0f0a693c4710b26
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites that are advertised as generators or hacks for popular games. The primary link, https://netcdn.xyz/app/406889139/free-money-links-coin-master-game-hack, is flagged as a lure for game hacks. The document's structure and embedded URLs suggest it is designed to trick users into visiting malicious sites, likely for credential harvesting or to download further malware. No scripts were extracted, but the PDF's nature and the high number of malicious-looking URLs indicate a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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 https://netcdn.xyz/app/406889139/free-money-links-coin-master-game-hack PDF link annotation
    • https://zarco.co.in/uploaded_files/userfiles/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://zarco.co.in/uploaded_files/userfiles/files/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • https://zarco.co.in/uploaded_files/userfiles/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://zarco.co.in/uploaded_files/userfiles/files/10-robux_GM431946152.pdfIn PDF document text
    • https://zarco.co.in/uploaded_files/userfiles/files/hack-the-game-coin-master_GM406889139.pdfIn PDF document text
    • https://zarco.co.in/uploaded_files/userfiles/files/coin-master-download_GM406889139.pdfIn PDF document text
    • https://zarco.co.in/uploaded_files/userfiles/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • https://zarco.co.in/uploaded_files/userfiles/files/coinmasterfree_GM406889139.pdfIn PDF document text
    • https://zarco.co.in/uploaded_files/userfiles/files/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • https://zarco.co.in/uploaded_files/userfiles/files/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://zarco.co.in/uploaded_files/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://zarco.co.in/uploaded_files/userfiles/files/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://zarco.co.in/uploaded_files/userfiles/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • https://zarco.co.in/uploaded_files/userfiles/files/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • https://zarco.co.in/uploaded_files/userfiles/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • https://zarco.co.in/uploaded_files/userfiles/files/coin-master-free-spins-link-quora_GM406889139.pdfIn PDF document text
    • https://zarco.co.in/uploaded_files/userfiles/files/free-robux-scams_GM431946152.pdfIn PDF document text
    • https://zarco.co.in/uploaded_files/userfiles/files/coin-master-hack-spin_GM406889139.pdfIn PDF document text
    • https://zarco.co.in/uploaded_files/userfiles/files/game-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://zarco.co.in/uploaded_files/userfiles/files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000482b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x482B 24388 bytes
SHA-256: a2b65c2141ee479ddd7d69e5eeee9b4dd8aadc21d0ff713fafbb28695890e52b
font_01_sfnt_off00008052.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8052 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008a3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A3D 18060 bytes
SHA-256: 21a754cd3574cb6c7a71d18422cf3ecba321ae18705df6ac97d40721e73d98df

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