Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b866e8dc2d4856e…

MALICIOUS

PDF

43.4 KB Created: 2021-05-10 20:04:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 0c80045408cead6def0991add6b915ac SHA-1: 0fb36faebe28d24d7301e5415a4792520ad528fd SHA-256: 5b866e8dc2d4856ed984753bd2d0e1a5637b696b88cb3584857bbd48f57ced69
160 Risk Score

Malware Insights

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

This PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting game hacks and cheats. The primary lure appears to be a 'Master Coin Hack Apk' which directs users to a URL associated with malicious redirectors. The document body and heuristics strongly indicate a social engineering tactic to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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 https://netcdn.xyz/app/406889139/master-coin-hack-apk-game-hack In PDF document text
    • http://jdleducation.com/images/coin-master-hack-pro-gamers-com_GM406889139.pdfIn PDF document text
    • http://jdleducation.com/images/minecraft-112-2-hacked-client_GM479516143.pdfIn PDF document text
    • http://jdleducation.com/images/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://jdleducation.com/images/coin-master-spin-ml-link_GM406889139.pdfIn PDF document text
    • http://jdleducation.com/images/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://jdleducation.com/images/coin-master-hack-spin-link_GM406889139.pdfIn PDF document text
    • http://jdleducation.com/images/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://jdleducation.com/images/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://jdleducation.com/images/martian-lettuce-coin-master-free_GM406889139.pdfIn PDF document text
    • http://jdleducation.com/images/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://jdleducation.com/images/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://jdleducation.com/images/coin-master-hack-xyz-download_GM406889139.pdfIn PDF document text
    • http://jdleducation.com/images/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • http://jdleducation.com/images/free-robux-meme_GM431946152.pdfIn PDF document text
    • http://jdleducation.com/images/minecraft-116-apk-download_GM479516143.pdfIn PDF document text
    • http://jdleducation.com/images/coinmasterfreespinlink_GM406889139.pdfIn PDF document text
    • http://jdleducation.com/images/free-spins-and-coins-from-coin-master-game_GM406889139.pdfIn PDF document text
    • http://jdleducation.com/images/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • http://jdleducation.com/images/reddit-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://jdleducation.com/images/free-roblox-accounts-with-robux_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
stream_003_off00004c5c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C5C 25948 bytes
SHA-256: 2256f37411c98e396c40d91603e63ef2e3e03eaac242f61dafbe8f60f949b483
font_01_sfnt_off00008875.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8875 17892 bytes
SHA-256: 41282dcb1c000e988ea8b2199b00347d54e117e16c55148ab4165d720f01bc1d

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