Malicious PDF — malware analysis report

Static analysis result for SHA-256 e38ebff00440acbd…

MALICIOUS

PDF

47.2 KB Created: 2021-06-04 05:40:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 47658d11b83d804b336d9ac24e6cb489 SHA-1: c5440754b7ddc7f499d51b47c9f1033688287b0f SHA-256: e38ebff00440acbd7e392f38ae2a922fb440bb34aaaa5b5173c52e7d86fc6c96
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 0.9769

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/how-to-minecraft-for-free-game-hack PDF link annotation
    • https://elibrary.sttar.ac.id/repository/coinmaster-links_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/coin-master-unlimited-spin-hack_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/coin-master-coin-link_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/how-to-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/how-to-pubg-uc-hack_GM1330123889.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/coin-master-free-spin-facebook-link_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/spin-link_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/free-roblox-exploits_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/roblox-hair-for-free_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/hack-para-coin-master-singapore_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/free-admin-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/coin-master-daily-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/free-coins-coin-master-2021_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
font_00_sfnt_off00005429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5429 25224 bytes
SHA-256: 9a10f97db9ce56d1906c024566250def1f125930ad4afceea839194a3c1dd97d
font_01_sfnt_off00008d4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D4F 2820 bytes
SHA-256: 34dd21cbcbbf8680f9624d5ddfa25e49232e6768200f74ddacb5347fd7a5f6dc
font_02_sfnt_off000096f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96F0 17872 bytes
SHA-256: 34f4f209811985126907d7d3a0424133b48c05c486b67c85b9a962c5d68635fe

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