Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bce314a49ac587a…

MALICIOUS

PDF

42.9 KB Created: 2021-05-19 02:11:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: fe5e0d20cfa163cafec8b0e31be4c678 SHA-1: 6a2c24d776bb4242d55371d84633b7de4518dec0 SHA-256: 7bce314a49ac587aa6c4a3a166c0127700439dbbf58638f16aed970521e3cd77
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/431946152/how-to-get-free-robux-not-a-scam-game-hack PDF link annotation
    • http://elsenorcafe.com.co/images/coin-master-hack-ios-download_GM406889139.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/download-coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/coin-master-hack-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/coin-master-daily-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/coin-master-key-free-spin_GM406889139.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/coin-master-daily-free-coins-link_GM406889139.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/roblox-assassin_GM431946152.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/coin-master-free-spin-now_GM406889139.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/roblox-2021_GM431946152.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/is-minecraft-free_GM479516143.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/100-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/coin-master-hack-iosgods_GM406889139.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/free-cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • https://rblx.landIn 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_off0000494f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x494F 26048 bytes
SHA-256: 29cadcdf123cca63c11dea03fb6aad3eb5ea16088e5a102288946e9d4e6f005a
font_01_sfnt_off000083f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83F9 18768 bytes
SHA-256: 022361ef70d0601eb321de045a15355e0ef134abc2a3262f50e5e6000d82738d

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