Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f949b865a3d8fe6…

MALICIOUS

PDF

45.0 KB Created: 2021-05-13 04:41:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9c1b077162395bafeb6963cd7dcc1c45 SHA-1: 20b8fd41249180c2d8b62ecc9e23362c69bb087f SHA-256: 1f949b865a3d8fe607fe23bce0a67dfadf81a6987f4de88c1b36b3a6ee2d2492
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document exhibits characteristics of a malicious lure, presenting a fake CAPTCHA and download buttons to trick users into clicking external links. The document body and extracted URLs suggest a scam related to free game currency or hacks, likely leading to malicious websites. The PDF contains a large number of external links, indicating a link farm designed to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/406889139/get-free-spins-in-coin-master-game-hack
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/coin-master-hack-tips_GM406889139.pdf
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/free-robux-with-no-human-verification_GM431946152.pdf
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/instant-robux_GM431946152.pdf
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/coin-master-heaven-daily-free-spins_GM406889139.pdf
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/coin-master-free-spins-iphone-2021_GM406889139.pdf
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/free-robux-generator-without-verification_GM431946152.pdf
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/coin-master-hack-download-ios_GM406889139.pdf
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/roblox-exploit-scripts_GM431946152.pdf
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/free-robux-generator-no-verification_GM431946152.pdf
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/daily-free-spin-coin-master-link_GM406889139.pdf
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/how-to-get-free-snacks-in-coin-master_GM406889139.pdf
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/free-robux-with-no-verification_GM431946152.pdf
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/coin-master-support_GM406889139.pdf
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/get-free-robux-com_GM431946152.pdf
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/roblox-com-r_GM431946152.pdf
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/coin-master-cheat-free_GM406889139.pdf
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/how-to-get-free-robux-without-offers_GM431946152.pdf
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/coin-master-gold-cards-free-link_GM406889139.pdf
    • https://www.e-learning-mi-alihsan-berau.com/__statics/gudangsoal/files/spin-coin-master-free_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c16.bin
281cbeaf2b0fbaf32a7082ef0f5747f59ae1ae1aca4426098fe9a48f45763b40		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C16 24980 bytes
font_01_sfnt_off00008498.bin
601c50867a41b9362538ff18e5f9479a0f9badf698aaf1eb7e88469c11719db7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8498 2920 bytes
font_02_sfnt_off00008eb1.bin
156f4ef702737132daa243a2c4fee8c0c13bec142009a1eebf0215f7cb8aef95		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EB1 17884 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.