Malicious PDF — malware analysis report

Static analysis result for SHA-256 3102c08325b6f822…

MALICIOUS

PDF

40.6 KB Created: 2020-09-04 17:18:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90d7e0556bd90aa9061b028a00c3b9d1 SHA-1: 9a754570f55fcdbfee2655c3a5f8f649592d0446 SHA-256: 3102c08325b6f8227e9010725572a6fdd9245effc0f6574b673650fa9a6985eb
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.link/wix?keyword=maison+kitsun%25C3%25A9+size+guide`. This link is presented within the document body as a 'Maison kitsuné size guide', indicating a social engineering lure. The document also contains a PDF link farm heuristic, suggesting an attempt to manipulate search engine results or distribute content across multiple benign-looking domains. No scripts were extracted, but the primary malicious activity appears to be redirection to a known malicious URL.

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.link/wix?keyword=maison+kitsun%25C3%25A9+size+guide
    • https://static.usrfiles.com/ugd/856cea_385f7078575e40e6935e9cedb788164c.pdf
    • https://static.usrfiles.com/ugd/fe0276_31a77970017e4fdfbd05f8f1f0fc0a45.pdf
    • https://static.usrfiles.com/ugd/0047a4_047ea74f36974cb49bc5a1f926590f68.pdf
    • https://static.usrfiles.com/ugd/cc03df_33fb502ada894187a624d33aec330e24.pdf
    • https://static.usrfiles.com/ugd/9edd50_c5a15b9dcc664e3e8cfb8696fcdc8d84.pdf
    • https://cdn.shopify.com/s/files/1/0430/8706/9335/files/38281798067.pdf
    • https://static.usrfiles.com/ugd/b8c837_3be500aae3ec4f30908e389f6d583f57.pdf
    • https://static.usrfiles.com/ugd/7dd30d_164b6ce672dd4f4fa9f7244e4050eab6.pdf
    • https://static.usrfiles.com/ugd/83e24f_18b29ac4295047b78958df9b8718374b.pdf
    • https://cdn.shopify.com/s/files/1/0432/0549/2904/files/84518770007.pdf
    • https://cdn.shopify.com/s/files/1/0428/3600/0931/files/42993503510.pdf
    • https://cdn.shopify.com/s/files/1/0435/0545/1174/files/ravojuzemagododules.pdf
    • https://cdn.shopify.com/s/files/1/0438/4437/0594/files/51487561954.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/bsc_maths_question_papers_1st_year_2020.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_off00005147.bin
e94d86a7174167159b279b3736e0c490981c1485cab6ffd0085386ffeadf3e34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5147 5124 bytes
font_01_sfnt_off0000629f.bin
f8df9fcc0460de5e053fd16e63701b34a624a16c566debc4fbd97ed0806ef676		 pdf-font-stream PDF embedded font (sfnt) at offset 0x629F 16268 bytes

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