Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e35589140bceadc…

MALICIOUS

PDF

36.1 KB Created: 2021-06-29 04:31:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: fec17a4ce80236c0517096f97f00725b SHA-1: 350dcf1a4ed80469633b52713511bf2a6a947329 SHA-256: 4e35589140bceadcf7cdfb749ea30db16cf31606a8dafc2531b45b3a1b89793f
82 Risk Score

Malware Insights

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

The document impersonates Amazon and uses a lure related to free items, which is a common tactic for credential phishing. The embedded URL points to a domain unrelated to Amazon, further indicating a phishing attempt. While no scripts were extracted, the presence of multiple malicious URLs and the ML classifier's high confidence suggest a high likelihood of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: http://netcdn.co/app/431946152/how-to-get-free-shirts-on-roblox-2021-without-bc-game-hack.
  • 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://netcdn.co/app/431946152/how-to-get-free-shirts-on-roblox-2021-without-bc-game-hack PDF link annotation
    • http://juscor.com.br/ckfinder/userfiles/files/hack-roblox-computer_GM431946152.pdfIn PDF document text
    • http://juscor.com.br/ckfinder/userfiles/files/free-supreme-shirts-roblox_GM431946152.pdfIn PDF document text
    • http://juscor.com.br/ckfinder/userfiles/files/can-simeone-hack-your-roblox-account-theough-discord_GM431946152.pdfIn PDF document text
    • http://juscor.com.br/ckfinder/userfiles/files/roblox-free-accessories_GM431946152.pdfIn PDF document text
    • http://juscor.com.br/ckfinder/userfiles/files/cheat-engine-clone-tycoon-2-roblox_GM431946152.pdfIn PDF document text
    • http://juscor.com.br/ckfinder/userfiles/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://juscor.com.br/ckfinder/userfiles/files/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://juscor.com.br/ckfinder/userfiles/files/deathrun-is-free-in-roblox-player_GM431946152.pdfIn PDF document text
    • http://juscor.com.br/ckfinder/userfiles/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://juscor.com.br/ckfinder/userfiles/files/free-minecraft-skins-ps4_GM479516143.pdfIn PDF document text
    • http://juscor.com.br/ckfinder/userfiles/files/coin-master-free-spins-link-download-today_GM406889139.pdfIn PDF document text
    • http://juscor.com.br/ckfinder/userfiles/files/como-hackear-uma-conta-do-roblox_GM431946152.pdfIn PDF document text
    • http://juscor.com.br/ckfinder/userfiles/files/free-accounts-free-robux-and-obc_GM431946152.pdfIn PDF document text
    • http://juscor.com.br/ckfinder/userfiles/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://juscor.com.br/ckfinder/userfiles/files/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://juscor.com.br/ckfinder/userfiles/files/free-pe_GM479516143.pdfIn PDF document text
    • http://juscor.com.br/ckfinder/userfiles/files/free-coin-master-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://juscor.com.br/ckfinder/userfiles/files/free-roblox-accounts-2021-with-robux-august_GM431946152.pdfIn PDF document text
    • http://juscor.com.br/ckfinder/userfiles/files/free-roblox-account-generator_GM431946152.pdfIn PDF document text
    • http://juscor.com.br/ckfinder/userfiles/files/robux-hack-no-verification_GM431946152.pdfIn 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_off000031c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31C4 22908 bytes
SHA-256: ddbad1afd1ba44cab32b2cfc5ad48292b2579c5a83328676f78d78ecd77c4c8d
font_01_sfnt_off0000654c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x654C 19944 bytes
SHA-256: 13b61969986bb2ad7a659d652be988cc8611469979db418d07f738b19e2600dd

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