Malicious PDF — malware analysis report

Static analysis result for SHA-256 47ef9ee5ea9c155b…

MALICIOUS

PDF

41.4 KB Created: 2020-08-21 13:42:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05304c05c83b07caa6364f5d8b071df1 SHA-1: f62a79a877dc748bfdd56ddc8de4d038f6d51443 SHA-256: 47ef9ee5ea9c155b63f5d16e0194fd448f4012ea80d64519db94097947078108
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious infrastructure. The document body, though partially corrupted, contains text related to 'wedding guest list template excel' and the malicious URL, suggesting a lure. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the presence of a link to malicious infrastructure, and the ML classifier strongly indicates maliciousness. The primary attack vector appears to be social engineering via a seemingly benign document that redirects to a harmful site.

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.cc/pify?keyword=best+wedding+guest+list+template+excel
    • http://files.apowersphotography.com/uploads/1/3/1/3/131381428/zaritugif.pdf
    • http://zakutibi.davidkellypoetry.com/uploads/1/3/1/4/131414661/pifofixajomosin_wabovixal.pdf
    • http://files.aimeetanos.com/uploads/1/3/2/7/132740445/solofaxa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/canon_in_d_classical_guitar_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0440/3704/6422/files/jifig.pdf
    • https://cdn.shopify.com/s/files/1/0430/2356/4957/files/equidad_de_genero_en_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0428/0742/7238/files/82329271310.pdf
    • https://cdn.shopify.com/s/files/1/0432/0333/0209/files/91532149660.pdf
    • https://cdn.shopify.com/s/files/1/0434/3929/2577/files/63143538971.pdf
    • https://cdn.shopify.com/s/files/1/0427/6961/2966/files/genetics_from_genes_to_genomes_6th_edition_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/3436/1503/files/81986086953.pdf
    • https://cdn.shopify.com/s/files/1/0430/7959/8229/files/disco_baby_laugh_ringtone_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/7424/7069/files/4205662372.pdf
    • https://cdn.shopify.com/s/files/1/0460/1610/2559/files/psychometric_test_answers_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/2855/3634/files/cengage_coordinate_geometry_book.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062c9.bin
6614c8aadac4883d90159b2fb0598ce12c04aee68158ecb7fe76fb515885da98
pdf-font-stream PDF embedded font (sfnt) at offset 0x62C9 5508 bytes
font_01_sfnt_off00007580.bin
199dcfbfd736d68741fb97c745ba3dcd9263da39779058fd44162b6bb1944796
pdf-font-stream PDF embedded font (sfnt) at offset 0x7580 10288 bytes