Malicious PDF — malware analysis report

Static analysis result for SHA-256 76b87e054b51dbc3…

MALICIOUS

PDF

44.2 KB Created: 2021-05-17 02:37:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: eb5a5b47667a23f6dacba92ce2236c25 SHA-1: 89865243b31fada2e9582b2f470c01ce2271bf8b SHA-256: 76b87e054b51dbc3545cfc4388f40e7d9432203e0a6b51c198eac702ebd83acd
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains multiple embedded URLs and a visual call-to-action, strongly suggesting a phishing or scam attempt. The primary URL, 'https://netcdn.xyz/app/431946152/lazy-blocks-com-free-robux-game-hack', and numerous others point to sites offering game-related cheats or currency, a common lure for credential theft or malware distribution. The presence of a callback lure heuristic further supports a scam-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.xyz/app/431946152/lazy-blocks-com-free-robux-game-hack
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/coin-master-free-spins-gratis_GM406889139.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/robux-link_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/coin-master-spin-link-2021_GM406889139.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/roblox-robux-hack_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/google-how-do-you-get-free-robux_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/coin-master-free-coins-2021_GM406889139.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/hack-xp-net-generators-coin-master_GM406889139.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/link-for-free-spins-on-coin-master_GM406889139.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/free-robux-mod_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/roblox-army-free-robux_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/coin-master-hacks-2021_GM406889139.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/coin-master-ad_GM406889139.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/sites-to-get-free-robux_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/coin-master-free-spin-ml_GM406889139.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/coin-master-free-spin-game_GM406889139.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/how-do-u-get-free-robux-2021_GM431946152.pdf
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-hack-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e27.bin
ada286d59c309d2952a8b1837e6059805808e65c6998f0f88b82c75dd2d39f5c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E27 25276 bytes
font_01_sfnt_off00008878.bin
34c8d34d38b90765c6e33941713304debcf78082891e10a16d595afa5c3321d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8878 19008 bytes

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