Malicious PDF — malware analysis report

Static analysis result for SHA-256 093e287d57e2d067…

MALICIOUS

PDF

51.8 KB Created: 2020-08-11 15:04:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32d3546cf10257d5c49374542135f20f SHA-1: 068e7460b7c5238a36dd55ce796259e748f6a082 SHA-256: 093e287d57e2d067f2899d38af38b2c462f37d6e63226dbd1206754f51503224
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one to a known malicious redirector at ttraff.com. The document body, though partially garbled, includes the same URL, suggesting a lure to a malicious site. The presence of a large number of external PDF links indicates a link farm or SEO manipulation tactic. No scripts were extracted from this sample.

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=mensagem+fernando+pessoa+pdf+espa%25C3%25B1ol
    • http://files.sacred-waters.org/uploads/1/3/1/3/131383510/1235764.pdf
    • http://besefokiw.christinamariewhinnery.com/uploads/1/3/1/6/131606227/zodugaxesimabuwufero.pdf
    • http://files.pfmorgans.com/uploads/1/3/2/6/132681264/kebolokuputi_gobezujekiro.pdf
    • http://bonak.sdgplanning.com/uploads/1/3/2/3/132302780/3449130.pdf
    • http://files.moombaparkps.vic.edu.au/uploads/1/3/0/7/130738792/5c3d80c06ac.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0447/4336/0663/files/pompidou_centre_architecture.pdf
    • https://cdn.shopify.com/s/files/1/0437/7188/7767/files/pdf_sociologia_para_principiantes.pdf
    • https://cdn.shopify.com/s/files/1/0435/4929/4756/files/fikoruzegedokujiputil.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/64791346013.pdf
    • https://cdn.shopify.com/s/files/1/0432/8253/0472/files/tanawufabadarojadebemora.pdf
    • https://cdn.shopify.com/s/files/1/0430/4620/7642/files/97721178774.pdf
    • https://cdn.shopify.com/s/files/1/0430/1455/3763/files/69004560879.pdf
    • https://cdn.shopify.com/s/files/1/0435/2606/2239/files/powijalulilexesagutitaz.pdf
    • https://cdn.shopify.com/s/files/1/0435/7039/7339/files/50087291402.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gomejalubewetilukifij.pdf
    • https://cdn.shopify.com/s/files/1/0437/2276/8538/files/58087989235.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_off00007a35.bin
db42c7c286541dea4436ec81b0df937f61245502540906d3d1b5136a7ec92609
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A35 5580 bytes
font_01_sfnt_off00008cde.bin
8277cb2c81a4d16474bd386d73a1e42f1faf0dc9f30da98caf6e5b2a2e12d7c9
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CDE 17924 bytes