Malicious PDF — malware analysis report

Static analysis result for SHA-256 50d8200d0c228524…

MALICIOUS

PDF

47.5 KB Created: 2020-09-01 16:53:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f585f6b17e1140d92d4f463ee64175c SHA-1: ca5f5c20593ce5091c761826ccdc0ef0bd7a80e5 SHA-256: 50d8200d0c228524d4f6fbe5c6c82e95bf35a6b867c69a2e12582119d5da2a83
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a malicious redirector link disguised as a request for 'aadhar card reprint' information, which is a common lure for credential harvesting. The document also contains numerous links to a PDF link farm, likely for SEO poisoning or to obscure the malicious redirector. The presence of MFA/one-time-code lure heuristics further supports the credential harvesting intent. No scripts were extracted from this sample.

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://ttraff.club/pify?keyword=e+aadhar+card++reprint
    • https://static.usrfiles.com/ugd/c6ac46_1cb9d59802fa480cbe7d0c3600225102.pdf
    • https://static.usrfiles.com/ugd/9a242c_597b3a85dd1e489c84f975f97e8d3f2e.pdf
    • https://static.usrfiles.com/ugd/eb6612_2988a87daff34f17995dbd4f032b4738.pdf
    • https://static.usrfiles.com/ugd/37428b_01f2afe4d9014436a518e0f17eef5e5f.pdf
    • https://static.usrfiles.com/ugd/b8c837_b5c1938aa6ba43dfa2caee2a9315a16c.pdf
    • https://static.usrfiles.com/ugd/b8c837_c89056227e6f45a3a5d8eed9a9e47951.pdf
    • https://static.usrfiles.com/ugd/895bef_2220dd7d32324788bdb1024c0b98e266.pdf
    • https://static.usrfiles.com/ugd/b8c837_8c334118718c41479e7eb52acdca90b6.pdf
    • https://static.usrfiles.com/ugd/b4609a_49fed8ce36e7448f8a4ecadba020c043.pdf
    • https://static.usrfiles.com/ugd/0a0016_7ed4e83752074162baaba7f04b1de23d.pdf
    • https://static.usrfiles.com/ugd/dd6616_f2c6772168ca4034991809d689fced39.pdf
    • https://static.usrfiles.com/ugd/36f25b_fd9286b30be847dfaff533b67d57695d.pdf
    • https://static.usrfiles.com/ugd/de02f3_3fa1ece9fe044ba797b67ca31bc3a819.pdf
    • https://static.usrfiles.com/ugd/f65175_85a15420cbe84ba48c8c86e5c49c5be9.pdf
    • https://static.usrfiles.com/ugd/912de2_fa6a63695d7c43b7bde80d7f50b6be9d.pdf
    • https://static.usrfiles.com/ugd/15cd4d_85e24de973764ac2ab34da094fffd5fb.pdf
    • https://static.usrfiles.com/ugd/e5412a_f3307d0a9bfc4209969aabfcfb4e793b.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000683d.bin
cd2be613149b322d5312aa7eed4292a7045a36eabe16da4baae1835db2dca8c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x683D 4908 bytes
font_01_sfnt_off000078e9.bin
ec35a9400302674810797f7bfef03dda890d7f465b5b688a4988a680048d95e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78E9 10296 bytes
font_02_sfnt_off00009c53.bin
cd228be6f8d12aa63b3084df9a35a34bb5b4fdc1efcef8f91460c6af2aa367e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C53 5772 bytes

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