Malicious PDF — malware analysis report

Static analysis result for SHA-256 988786adc2d611b6…

MALICIOUS

PDF

34.8 KB Created: 2021-06-20 12:11:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2d8b4fc069e707170b6c71f6c8cb7e8f SHA-1: 86524c27f9ae162510182a68d01cf04bdd69248f SHA-256: 988786adc2d611b666ebb9a237e62e45d80966b9e7f9a810c5628dd2c8e15276
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting 'free game hacks' and 'robux generators'. The document body and heuristics confirm this lure-based approach, aiming to trick users into visiting a malicious site. No scripts were extracted, but the primary attack vector is the malicious URL embedded within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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 http://netcdn.co/app/431946152/free-game-robloxs-game-hack In PDF document text
    • https://library.um-sorong.ac.id/repository/apps-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/pastebin-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/mediafre-download-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/how-to-get-free-shirts-on-roblox-2021-without-bc_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/coin-master-free-rewards-link_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-robux-er_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/how-to-get-free-robux-on-roblox-in-youtubecom_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/coin-master-spin-link-free_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/roblox-working-robux-hack_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/coin-master-free-spins-2-5-2021_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/how-to-hack-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-spin-and-win-coin-master_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-minecraft-windows-10-with-java_GM479516143.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/robux-in_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003008.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3008 22852 bytes
SHA-256: 2807aaf4508a90a16a882610d7fe761d943a06115632b4a27f1ef27673d3193c
font_01_sfnt_off0000636f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x636F 18908 bytes
SHA-256: 5a408a335218cf1540b8bd270dde5006b2ca2a973fbe484d264051a0991eb743

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