Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf4861a46e643cc4…

MALICIOUS

PDF

44.6 KB Created: 2020-09-02 03:42:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b5b529406093eabefd056484843f244 SHA-1: 4027a36424618c69967bd6b495d819c6895be2b7 SHA-256: cf4861a46e643cc40fe29a67e1b6b1f8e49a4748f9e661564f55a6f9bcc61fb1
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains a link farm and a direct link to a redirector, indicating a phishing or scam attempt. The document body, though heavily garbled, contains text fragments suggesting a 'drug guide' lure. The primary malicious URL identified is ttraff.com, which is known to host redirectors. The presence of numerous links to static.usrfiles.com suggests a link farm used to obscure the final destination.

Heuristics 4

  • 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.
  • 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
  • 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.com/wix?keyword=novolog+insulin+davis+drug+guide
    • https://static.usrfiles.com/ugd/b11f6d_6a5eaa1fc14f4b1999e6f27d749ddd4f.pdf
    • https://static.usrfiles.com/ugd/fd7405_a1d288d355c94386a51a849252c620b7.pdf
    • https://static.usrfiles.com/ugd/143c98_611adb7494274116b4a00950c87d1c67.pdf
    • https://static.usrfiles.com/ugd/1c8c1e_6369db4b93a04980bab4b185a566f931.pdf
    • https://static.usrfiles.com/ugd/7cefa9_864a4b71d6904c52a0dee5494c3d8c45.pdf
    • https://static.usrfiles.com/ugd/b8c837_d71be1e5321a4eb18819c86c033dffa5.pdf
    • https://static.usrfiles.com/ugd/1c8c6c_ed5f7f44682c4c58ab331020b3a207ee.pdf
    • https://static.usrfiles.com/ugd/3e0cb9_515790429244422cb83afffbc954d550.pdf
    • https://static.usrfiles.com/ugd/227d0f_d64a257ef07d4cd081c9fa53e134ded1.pdf
    • https://static.usrfiles.com/ugd/edb4a7_8beb9d7e71144c5699fc5c2ea11dfd7d.pdf
    • https://static.usrfiles.com/ugd/b77b08_22944d5b59cf41e08174898960f5d0ce.pdf
    • https://cdn.shopify.com/s/files/1/0429/9672/7962/files/bedapat.pdf
    • https://cdn.shopify.com/s/files/1/0435/8550/3393/files/canon_600d_specifications.pdf
    • https://cdn.shopify.com/s/files/1/0429/4115/3439/files/network_topology_notes.pdf
    • https://cdn.shopify.com/s/files/1/0430/8346/4855/files/8909720604.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_off000064d1.bin
5a73814726c7b6e39eb4ba6133f1073665fccb76d1af974b7abaee35ffe829da
pdf-font-stream PDF embedded font (sfnt) at offset 0x64D1 4824 bytes
font_01_sfnt_off00007545.bin
0361ce61d34eda622295ac11fe92f2d555fa63e30fd8a46ea10fb50ea761107d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7545 9996 bytes
font_02_sfnt_off00009789.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x9789 4324 bytes