Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7c5d949ec69f7f5…

MALICIOUS

PDF

43.6 KB Created: 2020-08-30 20:47:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f6069dd296807e286a18fef62139754 SHA-1: 585cc7f0d9733eb2c1ee7f4cb544791f92c3fc16 SHA-256: b7c5d949ec69f7f5cc478762ade2f8c1a63e3683c9ea4e47da0781fc3edce444
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as legitimate PDF downloads, but the primary link redirects to a known malicious redirector. This suggests a social engineering tactic to trick users into visiting malicious infrastructure, likely for further exploitation or credential harvesting. No scripts were extracted, limiting the analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/wix?keyword=xanathar+guide+pdf
    • https://static.usrfiles.com/ugd/b8c837_6e6e44d4e4bf4eafb1fee7e3daa17d38.pdf
    • https://static.usrfiles.com/ugd/64d889_490424cfe3b64073aa9817f51820af71.pdf
    • https://static.usrfiles.com/ugd/b8c837_ae06218149b2448b9d8164d7cf604aa0.pdf
    • https://static.usrfiles.com/ugd/a4e402_46064a4f1342437dabcad8afea8e8f5a.pdf
    • https://cdn.shopify.com/s/files/1/0431/9887/3762/files/kinuvivawinolikowuse.pdf
    • https://cdn.shopify.com/s/files/1/0436/7423/9129/files/vonadaduxomuxosav.pdf
    • https://cdn.shopify.com/s/files/1/0436/9724/2280/files/usd_to_inr_xoom.pdf
    • https://cdn.shopify.com/s/files/1/0430/0252/7895/files/definition_of_management_journal.pdf
    • https://cdn.shopify.com/s/files/1/0440/9350/5688/files/lelevozo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6219/0499/files/minunatele_ispravi_ale_lui_tartarin_din_tarascon.pdf
    • https://cdn.shopify.com/s/files/1/0428/8066/3705/files/resume_for_high_school_graduate.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_off00006ae8.bin
e47e7ae5f85bd6557c11aa757e4e630a40d63ac291a4cb27eab150baf69029e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE8 5068 bytes
font_01_sfnt_off00007c18.bin
1f29389a18bacb9eb5f7fa3377dfd992a350537b442b9a64d499626244bd2eb3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C18 11204 bytes

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