Malicious PDF — malware analysis report

Static analysis result for SHA-256 549e4f87fe43a561…

MALICIOUS

PDF

51.0 KB Created: 2021-06-10 15:12:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ce5224a30df425ef69691659847aa37f SHA-1: d4823cc55e5a19b0d0be485075e84e87479ab4f6 SHA-256: 549e4f87fe43a5610d1e6d27e685cfdb3cd8c121f2e5107d9c15901ee8eb65ee
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links, many of which are presented as 'SEO link farms' pointing to game hack resources. The document body and heuristics indicate a lure to download or access game-related hacks, likely serving as a pretext for malware distribution or phishing. The presence of multiple external URIs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9724

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 https://netcdn.tw/app/431946152/hack-to-get-the-legendary-pet-in-adopt-me-roblox-game-hack
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/coin-master-hack-mod-apk-2021-download_GM406889139.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/coin-master-hack-app-2021_GM406889139.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/coin-master-hack-cydia_GM406889139.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/mcmaster-club-coin-master-hack_GM406889139.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coin-links_GM406889139.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/www-robux-com_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy-2021_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/coin-master-games-download-free_GM406889139.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/roblox-hack-me_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/coin-master-free-spins-android_GM406889139.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/how-to-get-stuff-that-cost-coins-free-mcpe-master_GM406889139.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/free-robux-only-username-no-human-verification_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/coin-master-download-hack_GM406889139.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-inspect_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/rbx-roblox-robux_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/coin-master-gold-cards-hack-english_GM406889139.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/coin-master-hack-facebook_GM406889139.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/free-robux-easy-and-fast_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/coin-master-free-coins-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000539e.bin
a9c3057233ee2024f4492cd6d7dbda6324a5686dee1aa12d7a7b007bf03368b8		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x539E 27300 bytes
font_01_sfnt_off000093c2.bin
450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93C2 5696 bytes
font_02_sfnt_off0000a0d3.bin
76e0190c41cef6617c6403c003fc35789e7704ed92fe8b97f98c390e06f863da		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0D3 19620 bytes

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