Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc59363490fd8bd3…

MALICIOUS

PDF

37.6 KB Created: 2021-07-06 04:02:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ea9363c47a2bb0208001432b66d2e96b SHA-1: 88d47d51a9d7ad33c2c662f4a20ddce6a3cb34fa SHA-256: fc59363490fd8bd37331167ff034de0f44182a605d33822875a90e49c22bcef8
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded links that redirect to websites offering game hacks and cheats, such as 'coin-master-mod-apk-latest-hack'. The primary lure appears to be a 'free generator / game hack', designed to trick users into clicking the malicious link. The ML classifier strongly indicated maliciousness, supporting the observed redirection behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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 http://netcdn.tw/app/406889139/coin-master-mod-apk-latest-hack-with-unlimited-free-spins-game-hack PDF link annotation
    • http://digilib-ppsunisma.ac.id/repository/free-robux-and-builder-club-claims_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-hack-jailbreak-free_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/withdraw-robux-at-http-free-robux-space_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/hacks-para-volar-en-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-got-talent-hack-piano_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/good-hack-scripts-for-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-have-all-passes-in-roblox-free_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-exploit-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/hacks-for-roblox-murder-mystery-2_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/all-free-catalog-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-hack-game_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/best-paid-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-roblox-accounts-generator_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-for-kids_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_off000036c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36C9 23948 bytes
SHA-256: 97a75c42e79d1ad559c9c87af99472564f4eb093017f7781e5e471a6073ab19e
font_01_sfnt_off00006d3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D3B 19400 bytes
SHA-256: f0d5d55ca8cd0a4869404731018205be1ec0a41f36e7030a242679dc5fdaa466

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