Malicious PDF — malware analysis report

Static analysis result for SHA-256 7309504bf99f86a6…

MALICIOUS

PDF

38.0 KB Created: 2020-08-30 23:58:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0f2ea9baaa77da6bb51a6a612e4e5073 SHA-1: 82d1acdafb6d1656aa257f7075b18f75c6bb5b8c SHA-256: 7309504bf99f86a6f74caffee60f6c980bb53ea7f3579b2b1b635ab002862ea7
154 Risk Score

Malware Insights

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

The PDF contains embedded links, with one pointing to a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting an attempt to manipulate search results or host further malicious content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of embedded URLs and the link farm heuristic strongly suggest a malicious intent to redirect users to harmful sites.

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.com/wix?keyword=captain+tsubasa+dream+team+hack
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/9024/5787/files/vibewesowunamebofa.pdf
    • https://cdn.shopify.com/s/files/1/0437/4478/8634/files/femeziparefijutewup.pdf
    • https://cdn.shopify.com/s/files/1/0432/5661/0969/files/xatiguragivodebabipof.pdf
    • https://cdn.shopify.com/s/files/1/0427/6341/9815/files/26894480105.pdf
    • https://cdn.shopify.com/s/files/1/0440/4966/2117/files/ablixa_drug_information.pdf
    • https://static.usrfiles.com/ugd/b8c837_bda96b91e62445049cbdeb2cb1c3580d.pdf
    • https://static.usrfiles.com/ugd/dd4472_a4b4b4a587ec4e5da2d8eedf22da7686.pdf
    • https://static.usrfiles.com/ugd/b8c837_85610b545a39410487a610b3e7dfc8c2.pdf
    • https://static.usrfiles.com/ugd/b8c837_4ad506e16d354203ab18ad88794e9d11.pdf
    • https://static.usrfiles.com/ugd/87a178_7b82c9aa5f694869adba6c6559c61752.pdf
    • https://static.usrfiles.com/ugd/24853a_08d1094df6334157b9044d6d85bc9a05.pdf
    • https://cdn.shopify.com/s/files/1/0430/0311/7719/files/edit_converted_to_word_document.pdf
    • https://cdn.shopify.com/s/files/1/0428/3216/7068/files/91145292391.pdf
    • https://cdn.shopify.com/s/files/1/0462/4030/1216/files/ireport_plugin_for_netbeans_8._2.pdf
    • https://cdn.shopify.com/s/files/1/0434/4017/7317/files/nirusiragusapojabap.pdf
    • https://cdn.shopify.com/s/files/1/0434/5200/6552/files/49488720390.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_off000056a8.bin
6f519d03412ed10db29beb6a050962340c756706cbd6a875a3677aa409f0cdb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56A8 5388 bytes
font_01_sfnt_off000068bc.bin
1ebb9193795cd453f15aa1c0feaa17e7402da3c2a5a0cfb3138e205acd92cfcf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68BC 10196 bytes

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