Malicious PDF — malware analysis report

Static analysis result for SHA-256 6897f121860e622a…

MALICIOUS

PDF

38.0 KB Created: 2020-08-03 10:30:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8acbb31cca8af80d130e7350ebf3df77 SHA-1: 6d911b53818ad2ea3e5d7073a8e6d592de16909f SHA-256: 6897f121860e622ad54f883c8b15e5f43286b791b798107524a071c5fb7f3f94
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a link that redirects to known malicious infrastructure, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The document body, though obfuscated, contains text related to 'John Legends' and the authoring application 'wkhtmltopdf', suggesting a lure to disguise the malicious link. The presence of numerous external PDF links also indicates a link farm, likely for SEO manipulation or to host further malicious content.

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/pify?keyword=john+legends+everybody+knows
    • http://files.gracebecker.org/uploads/1/3/0/9/130969190/jukid.pdf
    • http://files.annetate.photo/uploads/1/3/2/6/132681625/tozoso-mejiwasusanupe-romubilisezu.pdf
    • http://files.shreveportnorth.org/uploads/1/3/0/7/130775435/deb216f74772f.pdf
    • http://files.asafeplaceministries.com/uploads/1/3/0/7/130776041/82304dee24066.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/4856/6938/files/39836145078.pdf
    • https://cdn.shopify.com/s/files/1/0430/8749/5322/files/67960842511.pdf
    • https://cdn.shopify.com/s/files/1/0438/1265/1170/files/playboy_magazine_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/2655/3755/files/18114215243.pdf
    • https://cdn.shopify.com/s/files/1/0434/4951/6199/files/papefumukarobotuwov.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64830269039.pdf
    • https://cdn.shopify.com/s/files/1/0427/9821/9420/files/72967668385.pdf
    • https://cdn.shopify.com/s/files/1/0432/1466/7934/files/79024805896.pdf
    • https://cdn.shopify.com/s/files/1/0433/4606/7605/files/bunatukogula.pdf
    • https://cdn.shopify.com/s/files/1/0440/3272/1046/files/gopiwesovapuza.pdf
    • https://cdn.shopify.com/s/files/1/0434/6714/5366/files/81837798248.pdf
    • https://cdn.shopify.com/s/files/1/0428/9547/4855/files/76802221128.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057c1.bin
a4206b0e549a04f7482f86723af5d940076032712ed510d06792dfba9e678a04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57C1 5324 bytes
font_01_sfnt_off000069eb.bin
ed590258de111b8050084d59445353d263dd156ebdb0cf199b15551e9f0f5f95		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69EB 9756 bytes

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