Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff45c6476adccc47…

MALICIOUS

PDF

46.2 KB Created: 2021-05-10 23:33:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 03038d15cdc44fb54104050b9ac8841c SHA-1: 28e425035d63c42774a62c6ca400717113ead481 SHA-256: ff45c6476adccc471a558101e35a72ebf019fbca3fd134ab6314b1962dbc5057
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links and a lure for 'free Robux' and game hacks, indicating a phishing or scam attempt. The embedded URLs likely lead to malicious sites designed to trick users into providing information or downloading further malware. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/free-robux-with-no-human-verification-game-hack PDF link annotation
    • https://jdlgroup.ca/images/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • https://jdlgroup.ca/images/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://jdlgroup.ca/images/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • https://jdlgroup.ca/images/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://jdlgroup.ca/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://jdlgroup.ca/images/todays-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://jdlgroup.ca/images/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • https://jdlgroup.ca/images/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://jdlgroup.ca/images/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://jdlgroup.ca/images/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • https://jdlgroup.ca/images/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • https://jdlgroup.ca/images/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://jdlgroup.ca/images/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • https://jdlgroup.ca/images/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • https://jdlgroup.ca/images/robux-generator-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://jdlgroup.ca/images/hack-coin-master-game-apk-download_GM406889139.pdfIn PDF document text
    • https://jdlgroup.ca/images/coin-master-free-bonus_GM406889139.pdfIn PDF document text
    • https://jdlgroup.ca/images/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://jdlgroup.ca/images/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • https://jdlgroup.ca/images/how-do-u-get-free-robux-2021_GM431946152.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_off00004cd5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CD5 24604 bytes
SHA-256: cfaa7c26ef97691f1906258038d6c14d1ba3dd094e1cc236ebeb947f3065f614
font_01_sfnt_off00008551.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8551 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008f3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F3B 19224 bytes
SHA-256: fee2af4c7f09d7ea12136e2767a6473cb73ac52634d47b0a6a367e18f3240d40

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