Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ae72ce13f3179a8…

MALICIOUS

PDF

34.6 KB Created: 2021-07-07 17:26:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 2b8a4b1892b43cb9f8dac9117a1d0c48 SHA-1: b599594b8ccf4f0e74e832ad23cf45be2496c662 SHA-256: 8ae72ce13f3179a87751c362cbe581e0b0bde3af96bc471f58740c49a1dc934d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector infrastructure, specifically advertising game hacks for Roblox and Coin Master. The document body and embedded URLs reinforce this lure, aiming to trick users into navigating to potentially harmful sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/how-to-hack-someone-on-roblox-game-hack In PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/secret-working-50k-free-robux-code_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/roblox-hack-robux-no-download-no-pub_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/roblox-hack-2021-cheat-engine_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/roblox-cp_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/300-daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/free-coins-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/roblox-free-wings_GM431946152.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/coin-master-rewards_GM406889139.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/coin-master-hack-lost-world-2021_GM406889139.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/free-robux-download_GM431946152.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_off00002fea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FEA 22488 bytes
SHA-256: ac0c681361c6d2d99e044f579530c906977a7964c05edfef2a009e49d784726f
font_01_sfnt_off00006218.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6218 19080 bytes
SHA-256: 963276ac3658a4f1303280410bd3aafd1a833c38ea79ed0af769875644ea58f7

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