Malicious PDF — malware analysis report

Static analysis result for SHA-256 497c0d18fa516639…

MALICIOUS

PDF

45.4 KB Created: 2021-05-19 10:03:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a2d5d353d06508ef442e18aef5db7681 SHA-1: 884778eb3d5a63cbff0d6ced7b0729a2f154e780 SHA-256: 497c0d18fa5166394235ed941bf4e63f87d2f155dc6f454e6f83c3ebf128b1ef
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple external links, including one specifically identified as a 'free generator / game hack' lure. The document body, though partially corrupted, also contains references to 'Pokemon Go Free Qr Codes 2021' and other game-related hacks, reinforcing the lure. The presence of numerous links to external PDF files hosted on suspicious domains suggests a campaign to redirect users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

Heuristics 5

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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/1094591345/pokemon-go-free-qr-codes-2021-game-hack PDF link annotation
    • http://rushxpress.de/images/robux-for-surveys_GM431946152.pdfIn PDF document text
    • http://rushxpress.de/images/free-robux-working_GM431946152.pdfIn PDF document text
    • http://rushxpress.de/images/www-coinmaster-com_GM406889139.pdfIn PDF document text
    • http://rushxpress.de/images/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://rushxpress.de/images/daily-spin_GM406889139.pdfIn PDF document text
    • http://rushxpress.de/images/minecraft-free-education_GM479516143.pdfIn PDF document text
    • http://rushxpress.de/images/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://rushxpress.de/images/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • http://rushxpress.de/images/robux-get-com_GM431946152.pdfIn PDF document text
    • http://rushxpress.de/images/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://rushxpress.de/images/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://rushxpress.de/images/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://rushxpress.de/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://rushxpress.de/images/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://rushxpress.de/images/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://rushxpress.de/images/roblox-sexually-abused_GM431946152.pdfIn PDF document text
    • http://rushxpress.de/images/how-to-earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://rushxpress.de/images/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://rushxpress.de/images/pubg-uc-via-easypaisa_GM1330123889.pdfIn PDF document text
    • http://rushxpress.de/images/coin-master-free-link_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_off00004a25.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A25 24184 bytes
SHA-256: eb86957d5cef14020bdec745a1334f686a66b31bb61935bf8919055b5a070620
font_01_sfnt_off0000813c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x813C 3636 bytes
SHA-256: 99dd96e89babb04aea0f0ebf99e33ebde901eaa524a16077e4ca0928c8dd6ae0
font_02_sfnt_off00008e07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E07 18576 bytes
SHA-256: f6b9da7fc700ba4584160be0599cb81d2e86ace1e3c90490dc990dd914e5dc03

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