Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7102775afc06a1a…

MALICIOUS

PDF

37.9 KB Created: 2020-08-31 02:52:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d8c11ee1e694f9f24493ed8ae24a1928 SHA-1: 103622594756400446860b64a7c1199221b00309 SHA-256: b7102775afc06a1aeb81ec35c05f8d2db28ddd172df0bcfe076f2990305d9777
152 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector infrastructure (ttraff.cc). The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, also contains the same malicious URL and a large number of benign-looking PDF links, suggesting a link farm designed to obscure the malicious redirector. The primary attack pattern involves luring the user to click the malicious link, which then redirects to a potentially harmful destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=dumas+the+f+word
    • https://cdn.shopify.com/s/files/1/0436/8980/3941/files/zozozanojisedegibuxola.pdf
    • https://cdn.shopify.com/s/files/1/0427/4189/1238/files/zorua_ultra_sun.pdf
    • https://cdn.shopify.com/s/files/1/0431/3497/6157/files/raxopogajawoj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26443777516.pdf
    • https://cdn.shopify.com/s/files/1/0433/4570/7162/files/defudokise.pdf
    • https://static.usrfiles.com/ugd/e1d12c_87bfdf421199418fbeacb7c0c62fd9d3.pdf
    • https://static.usrfiles.com/ugd/b58d21_b76a67344f17478daab4a06c4e773b07.pdf
    • https://static.usrfiles.com/ugd/b5aed9_6394f32f135441e19b28be5762564829.pdf
    • https://static.usrfiles.com/ugd/b8c837_d889520d68334d968f4b813a1fe3d761.pdf
    • https://static.usrfiles.com/ugd/0a052f_f306ef4b243b412bb6561e90b5d63d4b.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_off0000582f.bin
a7ac356c68f2c5484a989f05891da15b522533e714876993cd0c988f4d7987a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x582F 5208 bytes
font_01_sfnt_off000069d7.bin
2a228724989fd5896c6b9fc2497cd800901d0c3dc4e265dde588d1601084dfe2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69D7 9856 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.