Malicious PDF — malware analysis report

Static analysis result for SHA-256 62fa00c04ab9b45b…

MALICIOUS

PDF

49.1 KB Created: 2020-07-27 15:18:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f709cddd614e5a4ac76b1925dd6009c SHA-1: 9510d622c3d57bbb9bc2aea0d26e0c206ee2ff4e SHA-256: 62fa00c04ab9b45b828abe5659d007bfb477f60fa6bef967672ffcee08ef2fe8
154 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. One prominent link redirects to 'ttraff.com', identified as malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the PDF structure and embedded links indicate an attempt to drive traffic to potentially malicious or deceptive 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.com/pify?keyword=kindle+paperwhite+3+supported+formats
    • http://files.nationalparks-list.com/uploads/1/3/1/6/131606069/7689536.pdf
    • http://files.willowridge.org/uploads/1/3/1/3/131398088/tumiguzazafa_vufadonenow_rulaxizuri.pdf
    • http://files.rebekahlodge.com/uploads/1/3/2/8/132815123/9333523.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/1566/6849/files/jumuzujureluluzasedenogi.pdf
    • https://cdn.shopify.com/s/files/1/0432/6116/5723/files/fujiforu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9581/0455/files/fetorugosifuwuweraf.pdf
    • https://cdn.shopify.com/s/files/1/0430/5331/8306/files/61144275252.pdf
    • https://cdn.shopify.com/s/files/1/0435/4398/6340/files/tarale.pdf
    • https://cdn.shopify.com/s/files/1/0430/2585/8723/files/28335793129.pdf
    • https://cdn.shopify.com/s/files/1/0433/5344/0414/files/vozile.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/puxatofutedixa.pdf
    • https://cdn.shopify.com/s/files/1/0438/1242/1789/files/47893572572.pdf
    • https://cdn.shopify.com/s/files/1/0435/1423/2996/files/52639413821.pdf
    • https://cdn.shopify.com/s/files/1/0432/0706/5760/files/vozikajikonoso.pdf
    • https://cdn.shopify.com/s/files/1/0431/5624/2581/files/85677124477.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_off00008167.bin
a90c7d0ae97627d9f9dc680c4115a4de52715204c8884a5abb0bb2f348292761
pdf-font-stream PDF embedded font (sfnt) at offset 0x8167 5388 bytes
font_01_sfnt_off0000939c.bin
b32eb2c3774c7414eb49b6b68033997e56c5b156ad219373f4505c6dda5fa5ab
pdf-font-stream PDF embedded font (sfnt) at offset 0x939C 10540 bytes