Malicious PDF — malware analysis report

Static analysis result for SHA-256 52656cae8bbce6a1…

MALICIOUS

PDF

49.4 KB Created: 2020-09-01 04:16:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4fd44521b0c0d0413c4008fcf9a7ff85 SHA-1: 35c3cee799475f63779fa64425e9e21da9b29e2b SHA-256: 52656cae8bbce6a1c1c3babf332897f1864433689e1ff5aad4364cc0309d2ce4
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, directing users to a URL disguised with a search query for 'America's Got Talent winner 2018 performance'. This indicates a social engineering lure to drive traffic to malicious infrastructure. The file also contains a large number of external PDF links, suggesting a link farm or SEO poisoning tactic. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • 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.cc/wix?keyword=america%2527+s+got+talent+winner+2018+performance
    • https://static.usrfiles.com/ugd/b8c837_c9237612323147479921e1837dbe1c75.pdf
    • https://static.usrfiles.com/ugd/19ce5d_9b0a4cea629e4606adbd14bb07f22596.pdf
    • https://static.usrfiles.com/ugd/1fbf8b_3d1ec89d1776490da93fde5ff0517c8e.pdf
    • https://static.usrfiles.com/ugd/b7ed05_a950cbb486664209aaa9a280b98acab7.pdf
    • https://static.usrfiles.com/ugd/29c71c_241d8d3d660042949dd269c024dc3a9d.pdf
    • https://cdn.shopify.com/s/files/1/0432/8921/5129/files/yamaha_fz_07_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/6663/6953/files/solving_rational_equations_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/9276/2006/files/bowes.pdf
    • https://cdn.shopify.com/s/files/1/0432/6909/5590/files/master_algorithmic_programming_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0433/4669/0203/files/dual_voltage_transformer_symbol.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007709.bin
a9cd7bdf5e39c251a7a8ebb1f80a47a5096be06af38ec4b4aa555e45a30d8446		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7709 5968 bytes
font_01_sfnt_off00008b5e.bin
33f9633a81e0a4bd3a250f7eec3e54ae13bbf1c467cc38984a54841b31c9ed20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B5E 14552 bytes

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