Malicious PDF — malware analysis report

Static analysis result for SHA-256 df5e5f016f4f77c2…

MALICIOUS

PDF

43.8 KB Created: 2020-09-15 21:14:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c14be27cef92e35a5cd19fc5265aa329 SHA-1: 4b75d17a88eaa8357887747b67e560964bea2fa5 SHA-256: df5e5f016f4f77c2bb901ad89a73853fd7e5d4963d40867977e24faca1aecbfe
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, many of which point to PDF files hosted on various domains, suggesting a link farm or SEO poisoning tactic. One prominent link, 'https://ttraff.link/pify?keyword=kitchen+nightmares+blackberry%2527s+mouse', redirects to potentially malicious infrastructure. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous PDF links indicates a coordinated effort to drive traffic to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.link/pify?keyword=kitchen+nightmares+blackberry%2527s+mouse
    • http://files.teachingsofisis.com/uploads/1/3/0/7/130775734/6470989.pdf
    • http://files.alhasoob.co.uk/uploads/1/3/2/6/132696015/2388652.pdf
    • http://files.unitashonor.org/uploads/1/3/0/8/130814205/waxaji.pdf
    • http://files.michaeldepore.com/uploads/1/3/1/6/131607404/fiwivuzonodakax.pdf
    • http://dasomemiw.mdlashesllc.com/uploads/1/3/2/7/132741508/xevekebem_suwurediju.pdf
    • http://gaviliso.colganscattle.com/uploads/1/3/2/8/132814930/0cb19c8f8c.pdf
    • http://files.larryssportsexchange.com/uploads/1/3/0/8/130874128/folerezome.pdf
    • http://tijex.augustiniana.net/uploads/1/3/2/3/132303307/e08d62be5d7.pdf
    • http://buguka.multifloraplants.com/uploads/1/3/0/8/130873982/netazusetotitak_timokope_ronoleno.pdf
    • http://files.cairnsclassroom.com/uploads/1/3/0/8/130814596/setexopejufe.pdf
    • http://watok.artisanhandfood.com/uploads/1/3/2/7/132712336/jetuliwamebu_jevotojig_naxuposa.pdf
    • http://xuxoses.bgcjcga.org/uploads/1/3/0/7/130776088/8395767.pdf
    • http://xegugu.clarlennursery.org/uploads/1/3/1/4/131453329/zikebumawusagep_memaje_xemoras_rafunazorug.pdf
    • https://cdn.shopify.com/s/files/1/0451/0262/9016/files/harcourt_grammar_practice_book_grade_3.pdf
    • https://cdn.shopify.com/s/files/1/0437/6271/2727/files/65915769670.pdf
    • https://cdn.shopify.com/s/files/1/0432/3491/8558/files/wopusijokubotugilu.pdf
    • https://cdn.shopify.com/s/files/1/0437/3273/0017/files/png_interlaced_or_not.pdf
    • https://cdn.shopify.com/s/files/1/0432/8167/8494/files/24791697444.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/
    • https://cdn.shopify.com/s/files/1/0432/8167/8494/files/24791697444

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006af8.bin
59a0b288bff4e18418b605417a8341a3208ca8ec19714137de79878e5601e898
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF8 5524 bytes
font_01_sfnt_off00007da5.bin
ac42cff061ebd520a9f3067c475cb12ea76efc2890ad1a7a1a7ad9e568e06f88
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA5 10616 bytes