Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ea43abd8800e491…

MALICIOUS

PDF

35.0 KB Created: 2021-07-10 01:02:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 571b03e35b7b4e11977864cd61d5a1e0 SHA-1: c405693e4598bbf7a42914ce338b9f6e0402e064 SHA-256: 5ea43abd8800e491f0818b431c460bee58ae6892578b2e7140f605fdbf1f71e8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirectors and potentially malicious files hosted on external domains, masquerading as game hacks and generators. The presence of a 'download button' heuristic and the ML classifier's high confidence score indicate a malicious intent to trick users into downloading unwanted or harmful software. No scripts were extracted, but the embedded URLs and redirector links are the primary indicators of malicious activity.

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.tw/app/431946152/roblox-hack-free-download-no-virus-game-hack In PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/free-robux-for-roblox-without-human-verification_GM431946152.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/how-to-get-free-redeem-codes-for-roblox_GM431946152.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/coin-master-attack-hack_GM406889139.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/free-items-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/tiktok-free-840-apk_GM835599320.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/coin-master-homepage_GM406889139.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/how-to-have-clothe-free-roblox_GM431946152.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/free-robux-just-freind-me_GM431946152.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/how-to-hack-peoples-account-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/free-robux-tix-generator-download_GM431946152.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/how-to-get-cheats-in-roblox-jailbreak-yt-2021_GM431946152.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/minecraft-life-hacks_GM479516143.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
font_00_sfnt_off000030af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30AF 22296 bytes
SHA-256: e2ea86280e8e97fba027f2b27d4eb1b9b7f3d97cbeecdefffbe516aa8fccaa14
font_01_sfnt_off00006257.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6257 19536 bytes
SHA-256: 993bb455abe919a2d0d50143b2f636dc90e126e5576b3e5143054ade0fbe1bcc

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