Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1e01e636902968d…

MALICIOUS

PDF

38.5 KB Created: 2020-08-30 07:16:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d37015bd9a0a82ad62bb3d984956bcc5 SHA-1: 4295c38ec748e847751bec2b3f18069109d5cf31 SHA-256: e1e01e636902968d09ff6a328787c696ad604657e1fc7955324632ce36d16fd4
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.club/wix?keyword=vessel+impact+driver', which is flagged as malicious. The presence of numerous links, including the malicious one, suggests an attempt to lure the user to a harmful site, likely for phishing or malware delivery. No scripts were extracted from this sample.

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.club/wix?keyword=vessel+impact+driver
    • https://cdn.shopify.com/s/files/1/0433/4682/1278/files/eggs_for_bart_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/4855/1068/files/71785985036.pdf
    • https://cdn.shopify.com/s/files/1/0440/4169/9478/files/lomigij.pdf
    • https://cdn.shopify.com/s/files/1/0435/2471/8746/files/vitopetedijojidaraziximoj.pdf
    • https://cdn.shopify.com/s/files/1/0434/7048/7712/files/coalition_for_better_ads_guidelines.pdf
    • https://static.usrfiles.com/ugd/12f4eb_f09d220211084e128ec1c6f809dbf903.pdf
    • https://static.usrfiles.com/ugd/50c35f_33e4416589bc48bc9a2894dc65303e19.pdf
    • https://static.usrfiles.com/ugd/4dd980_0b7732092b554bf1890bbabeabe58fbb.pdf
    • https://static.usrfiles.com/ugd/e73fea_944d703e94e04884af030e7036c517fc.pdf
    • https://static.usrfiles.com/ugd/b8c837_be0ec9187d7547169cc924ad384d5531.pdf
    • https://static.usrfiles.com/ugd/b8c837_c60f0e16c4c7435696cc43e21fbc263b.pdf
    • https://static.usrfiles.com/ugd/a44510_f5b0cb8c85c745bc9b9111df3428be29.pdf
    • https://static.usrfiles.com/ugd/b8c837_7254b13464f7453bb03adde8555a7a0a.pdf
    • https://static.usrfiles.com/ugd/b8c837_cc679750b13547dd99d7637bdc02d937.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_off00005889.bin
3693427698d437e85c7e593cb7dd3ae8510878e514c56e9c30c0c385b998c8b0
pdf-font-stream PDF embedded font (sfnt) at offset 0x5889 5244 bytes
font_01_sfnt_off00006a46.bin
d9acbfe95651150af03a9fd06d1174b73ec87bbd9e341a8b2dd05cc95ba769a5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A46 10392 bytes