Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b2cab01b54ffd89…

MALICIOUS

PDF

47.7 KB Created: 2021-06-08 17:14:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 01f7438bba2f1c0450b5758ad4ce9fbf SHA-1: d20dd0df90b185ba1322e58f9aa517170b627894 SHA-256: 2b2cab01b54ffd891811ffa6294fece8afe26096df4d680ae3f77adb7b093ec2
162 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a phishing or malware distribution lure. It contains numerous external links, many of which point to SEO-optimized PDF files, suggesting a link farm designed to attract users searching for hacks or cheats. The presence of a 'download button' lure and an MFA lure further supports the hypothesis that the document aims to trick users into downloading malicious content or divulging sensitive information. No scripts were extracted, but the overall structure and linked URLs indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

Heuristics 6

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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.tw/app/431946152/roblox-hack-tool-free-download-no-survey-no-password-game-hack
    • http://e-lib.smaxaverius5.sch.id/repository/how-to-duplicate-coin-master-spin-hack_GM406889139.pdf
    • http://e-lib.smaxaverius5.sch.id/repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • http://e-lib.smaxaverius5.sch.id/repository/free-spins-coin-master-october-17-2021_GM406889139.pdf
    • http://e-lib.smaxaverius5.sch.id/repository/bloxawards-com-earn-free-robux_GM431946152.pdf
    • http://e-lib.smaxaverius5.sch.id/repository/coin-master-free-spins-link-blogspot-april-2021_GM406889139.pdf
    • http://e-lib.smaxaverius5.sch.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdf
    • http://e-lib.smaxaverius5.sch.id/repository/coin-master-free-spins-1-coin-master_GM406889139.pdf
    • http://e-lib.smaxaverius5.sch.id/repository/freerobux-co_GM431946152.pdf
    • http://e-lib.smaxaverius5.sch.id/repository/minecraft-pe-hack-client_GM479516143.pdf
    • http://e-lib.smaxaverius5.sch.id/repository/free-roblox-scrach-ins_GM431946152.pdf
    • http://e-lib.smaxaverius5.sch.id/repository/free-robux-now_GM431946152.pdf
    • http://e-lib.smaxaverius5.sch.id/repository/free-robux-com-2021_GM431946152.pdf
    • http://e-lib.smaxaverius5.sch.id/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdf
    • http://e-lib.smaxaverius5.sch.id/repository/get-free-robux-without-human-verification_GM431946152.pdf
    • http://e-lib.smaxaverius5.sch.id/repository/free-robux-no-verification-or-survey_GM431946152.pdf
    • http://e-lib.smaxaverius5.sch.id/repository/free-coins-coin-master-2021_GM406889139.pdf
    • http://e-lib.smaxaverius5.sch.id/repository/how-to-get-free-clothing-on-roblox_GM431946152.pdf
    • http://e-lib.smaxaverius5.sch.id/repository/free-coins-app-for-coin-master_GM406889139.pdf
    • http://e-lib.smaxaverius5.sch.id/repository/free-spins-coin-master-links-blogger_GM406889139.pdf
    • http://e-lib.smaxaverius5.sch.id/repository/roblox-free-hair-boy_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000052b5.bin
18fb12ae506ba3c79f08dce18e0906e98ac8e6ca7afa7ece81bafc86ef8dbf46		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52B5 28824 bytes
font_01_sfnt_off000094b4.bin
26671e768df2ba74c3350765f44789cd802f3cde0dce753d9bd933be4bca1456		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94B4 19440 bytes

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