Malicious PDF — malware analysis report

Static analysis result for SHA-256 13066a63a447c68e…

MALICIOUS

PDF

43.8 KB Created: 2020-08-29 01:49:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c4e7c887fcead52263a325c0142ee8e3 SHA-1: f9a9974b3d6e24454a835e16bb8e1fcd1fbc7f97 SHA-256: 13066a63a447c68ed68b30ef10567a5d7798f3c2b6b11e42cce41d74c562fd7b
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=systema+techniques+pdf'. This URL is embedded within the document body, suggesting a phishing or scam attempt to lure the user to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious.

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=systema+techniques+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/7685/3664/files/62382879628.pdf
    • https://cdn.shopify.com/s/files/1/0441/2869/8520/files/ati_teas_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/9080/4885/files/parametrik_ve_nonparametrik_testler.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50751207741.pdf
    • https://cdn.shopify.com/s/files/1/0430/7959/8229/files/80111378620.pdf
    • https://cdn.shopify.com/s/files/1/0430/3205/1873/files/motaxirujasugusenufujuwew.pdf
    • https://cdn.shopify.com/s/files/1/0427/4189/1238/files/pdf_reader_google_drive.pdf
    • https://cdn.shopify.com/s/files/1/0434/6164/0342/files/chemistry_final_exam_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/6032/9637/files/gbf_arcanum_guide.pdf
    • https://static.usrfiles.com/ugd/b8c837_f26c6ce6ec10422b8e65ee616349fbbb.pdf
    • https://static.usrfiles.com/ugd/b8c837_f035f8eec18649eebf6ec9c77deffc04.pdf
    • https://static.usrfiles.com/ugd/b8c837_4022bbd8e7c646d1a67575f1a7aa3b96.pdf
    • https://static.usrfiles.com/ugd/b8c837_a7c66bdfd47e45849508a83533fc6e57.pdf
    • https://cdn.shopify.com/s/files/1/0433/7447/7464/files/70758739199.pdf
    • https://cdn.shopify.com/s/files/1/0439/7416/4638/files/48198134661.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_off00006cd4.bin
8196887a58ebe061129101a59946bad7fabfabfab348da8f56e4bfde076a9a13
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD4 5600 bytes
font_01_sfnt_off00007fc3.bin
1f5b865548c48028511ef63ad583a11b0daef2206da13d1e1d57688f3f6980a6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC3 10584 bytes