Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd11ced4fa20d249…

MALICIOUS

PDF

44.0 KB Created: 2021-06-03 12:48:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e17ed217ef74448561b3ad75ac968f74 SHA-1: 1095adbfe0fabbbfa4eb931c964c3ec89f57b5c9 SHA-256: fd11ced4fa20d249fe30348bc7256919e8ed241b0efa8d38adace884f644422a
122 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. It uses a ClickFix paste-and-run lure. 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 0.9865

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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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.online/app/479516143/aternos-free-minecraft-server-game-hack PDF link annotation
    • https://opac.umrah.ac.id/repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/rbx-claim_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/pokemon-go-free-accounts-2021_GM1094591345.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-launcher-free_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/claim-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spins-no-generator_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-scam_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/oginject-co_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-instagram-free-spins_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-battle-royale-hacks_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/hack-coin-master-spin_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_004_off0000511c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x511C 25632 bytes
SHA-256: f24e6950f1343a7ea01e2b73344e5b1dd92779862ca083eae05995fad9a13064
font_01_sfnt_off00008ae7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE7 17824 bytes
SHA-256: 04e228694d9982d1c7efe163f2653fab57675f1ecbbe7e635aa0b095f728f7e2

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