Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f6dc5f7feb24073…

MALICIOUS

PDF

35.9 KB Created: 2021-07-08 22:58:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: e44f7ed1a679edd6efefd381fba8dcb1 SHA-1: 7b51da50b551dbd4efedf47e2be00b61d3d3a8d2 SHA-256: 3f6dc5f7feb24073786fd36bb25e1394c592ec8c9577da1497777c696acedd34
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and currency to entice users to click on embedded links. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or downloads. The document body and heuristics confirm the deceptive nature of the content, aiming to trick users into visiting potentially harmful sites.

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/406889139/free-coin-master-spins-daily-game-hack In PDF document text
    • http://cintabaca.org/katalog/repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/hack-coin-master-net_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/vip-roblox-free_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-create-roblox-hack-place_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/using-cheat-engine-on-roblox-bloxburg_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/game-hunters-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/coin-master-free-spins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/hack-for-roblox-exploit_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-hack-download-windows-10_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/elemental-battlegrounds-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-hack-sahrbite_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/minecraft-menu_GM479516143.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-spins_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/coin-master-hacks-no-downloading_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/coin-master-hack-https-coinms-net_GM406889139.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_off00003519.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3519 22944 bytes
SHA-256: 95875f9a0b17b9afadb2f7c9359b9bc31c09c1a880f5f6adf724eb2923020eac
font_01_sfnt_off000068d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68D3 18596 bytes
SHA-256: a7833972b885d34acb5ad01908fbd6133f193c29e2abbc4434009272e0e2ed6c

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