Malicious PDF — malware analysis report

Static analysis result for SHA-256 15cc7f07914dd4a4…

MALICIOUS

PDF

35.1 KB Created: 2021-07-03 14:17:50 +07:00 Authoring application: Aspose Ltd. (via Aspose.Pdf for .NET 10.1.0) First seen: 2021-10-23
MD5: db4735b619a82640639f979f03f5dc1e SHA-1: d189e3a935300c53571977e1c048377650406ade SHA-256: 15cc7f07914dd4a41e7d2ebcc224d65c8c2df8c6cf6a725400a61c506751702d
72 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that are identified as lures for game hacks and free generators. The primary link, http://cryptorace.net/cryptorace.net/cryptorace.net/cryptorace.net/netcdn.tw/app/406889139/coinmasterfreespinlink-game-hack, strongly suggests a social engineering tactic to trick users into visiting a potentially malicious site. No scripts were extracted, but the presence of embedded URLs and the 'game hack' lure indicate a likely attempt to deliver a second-stage payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier clean score 0.1522

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.
  • 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://cryptorace.net/cryptorace.net/cryptorace.net/cryptorace.net/netcdn.tw/app/406889139/coinmasterfreespinlink-game-hack PDF link annotation
    • http://cryptorace.net/cryptorace.net/cryptorace.net/cryptorace.net/elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/roblox-zone-free-robux_gm431946152.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/cryptorace.net/cryptorace.net/elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/wurst-115-2_gm479516143.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/cryptorace.net/cryptorace.net/elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/how-to-get-more-robux-for-free_gm431946152.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/cryptorace.net/cryptorace.net/elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-2021_gm406889139.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/cryptorace.net/cryptorace.net/elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/more-robux_gm431946152.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/cryptorace.net/cryptorace.net/elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/roblox-free-online-game_gm431946152.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/cryptorace.net/cryptorace.net/elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-doing-anything_gm431946152.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/cryptorace.net/cryptorace.net/elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/hacks-for-roblox-jailbreak_gm431946152.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/cryptorace.net/cryptorace.net/elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021_gm431946152.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/cryptorace.net/cryptorace.net/elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/coin-master-spin-free_gm406889139.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/cryptorace.net/cryptorace.net/elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verification_gm431946152.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/cryptorace.net/cryptorace.net/elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/is-there-a-way-to-get-free-robux_gm431946152.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/cryptorace.net/cryptorace.net/elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/master-coin-free-spin_gm406889139.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/cryptorace.net/cryptorace.net/elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/microsoft-roblox_gm431946152.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/cryptorace.net/cryptorace.net/elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/minecraft-svg-free_gm479516143.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/cryptorace.net/cryptorace.net/elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-2021_gm431946152.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/cryptorace.net/cryptorace.net/elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/robux-online_gm431946152.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/cryptorace.net/cryptorace.net/elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/robuxglobalcom_gm431946152.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/cryptorace.net/cryptorace.net/elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/coin-master-hacks-xyz_gm406889139.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/cryptorace.net/cryptorace.net/elearning.mtsn2skh.sch.id/__statics/gudangsoal/files/roblox-android-hack_gm431946152.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In 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_off0000327c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x327C 22800 bytes
SHA-256: 9f2f690cb98860cba06e625c46d859b74cc4ac49a721c040947ec26728219f0b
font_01_sfnt_off00006506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6506 18516 bytes
SHA-256: a000f6d0810836f211bd69ad4954bd13017d955b6cad91c28efc413f8e97b1ec

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