Malicious PDF — malware analysis report

Static analysis result for SHA-256 6693ef33fd7ae767…

MALICIOUS

PDF

33.6 KB Created: 2020-08-30 05:51:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d730908796a7095ae2fa2c56d3b35f0a SHA-1: 2b8379a196b58fe0fe7c07813765711a4ed71a22 SHA-256: 6693ef33fd7ae767586613e225c1baef611eb6e0c8a7d4c81a00b1fff7ebdea4
154 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a link farm. One of the primary links, 'https://ttraff.com/wix?keyword=mpow+bluetooth+headphones+charging+cord', is flagged as a known malicious redirector. The document body and embedded link structure suggest an attempt to lure users into clicking through to potentially harmful websites, likely for SEO manipulation or to distribute further malware. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=mpow+bluetooth+headphones+charging+cord
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/88a84f_69f6827ca4c745529d4ea14c784b0a18.pdf
    • https://static.usrfiles.com/ugd/40512e_ba934a5cfb884c6089f866c23998deec.pdf
    • https://static.usrfiles.com/ugd/b8c837_42e1384639084a63aabb4bc8a5e5322d.pdf
    • https://cdn.shopify.com/s/files/1/0437/2591/4262/files/spanish_grammar_exercises_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0438/9827/3944/files/zemokoba.pdf
    • https://cdn.shopify.com/s/files/1/0432/6542/5570/files/botixeji.pdf
    • https://cdn.shopify.com/s/files/1/0464/8042/5112/files/21221960129.pdf
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/ralotowibufevuwubi.pdf
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/bujetegepora.pdf
    • https://cdn.shopify.com/s/files/1/0432/6152/6166/files/suvow.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gidawibozifuniji.pdf
    • https://cdn.shopify.com/s/files/1/0428/1879/7724/files/gugisakuti.pdf
    • https://cdn.shopify.com/s/files/1/0430/2825/0781/files/dipobogujo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5053/2001/files/49556146475.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_off000045a2.bin
4b31424a968f0537ebc217b22f6565d10042fd7323a651b42c66fc439f1f20bb
pdf-font-stream PDF embedded font (sfnt) at offset 0x45A2 5572 bytes
font_01_sfnt_off00005898.bin
96328d26dd42729b0ed3c87f7ec059ed8a4b974966cecc8371818d5374b1da5d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5898 9696 bytes