Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2c6a5fb046e6aeb…

MALICIOUS

PDF

44.0 KB Created: 2021-05-15 15:09:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 91249a504ab90ce61a8dfdc3d620577b SHA-1: bb5a6bd93abd5fa1635ae48f42e811cf41552bfa SHA-256: d2c6a5fb046e6aeba09ba1b92c7d6f359821722403d116aeafd9eb001e1638d4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to pages promising game hacks and free generators, a common lure for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the PDF structure itself points to external URI usage. While no scripts were explicitly extracted, the nature of the lures suggests an intent to redirect users to malicious sites, likely for further payload delivery or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/smart-lodhi-coin-master-hack-game-hack PDF link annotation
    • https://centralcoastlaundry.com.au/uploaded_files/userfiles/files/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://centralcoastlaundry.com.au/uploaded_files/userfiles/files/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://centralcoastlaundry.com.au/uploaded_files/userfiles/files/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://centralcoastlaundry.com.au/uploaded_files/userfiles/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://centralcoastlaundry.com.au/uploaded_files/userfiles/files/roblox-images_GM431946152.pdfIn PDF document text
    • https://centralcoastlaundry.com.au/uploaded_files/userfiles/files/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • https://centralcoastlaundry.com.au/uploaded_files/userfiles/files/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://centralcoastlaundry.com.au/uploaded_files/userfiles/files/flip-master-free-coins_GM406889139.pdfIn PDF document text
    • https://centralcoastlaundry.com.au/uploaded_files/userfiles/files/play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://centralcoastlaundry.com.au/uploaded_files/userfiles/files/coin-master-strategy_GM406889139.pdfIn PDF document text
    • https://centralcoastlaundry.com.au/uploaded_files/userfiles/files/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • https://centralcoastlaundry.com.au/uploaded_files/userfiles/files/how-to-hack-coin-master-game-2021_GM406889139.pdfIn PDF document text
    • https://centralcoastlaundry.com.au/uploaded_files/userfiles/files/free-robux-place_GM431946152.pdfIn PDF document text
    • https://centralcoastlaundry.com.au/uploaded_files/userfiles/files/coin-master-hack-apk-latest-version-2021_GM406889139.pdfIn PDF document text
    • https://centralcoastlaundry.com.au/uploaded_files/userfiles/files/roblox-old-avatar_GM431946152.pdfIn PDF document text
    • https://centralcoastlaundry.com.au/uploaded_files/userfiles/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://centralcoastlaundry.com.au/uploaded_files/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://centralcoastlaundry.com.au/uploaded_files/userfiles/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://centralcoastlaundry.com.au/uploaded_files/userfiles/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://centralcoastlaundry.com.au/uploaded_files/userfiles/files/free-coin-master-spins-and-coins_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
stream_003_off00004c22.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C22 28264 bytes
SHA-256: 65e3bb8eedfea070c6a32681a04dc7beb9da3bfda7e2f49f47fc1789ef483b54
font_01_sfnt_off000089f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89F0 18316 bytes
SHA-256: a05114009afcd09b57a1cbd8077165af15d86336b6d5abd27516af736212cac5

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