Malicious PDF — malware analysis report

Static analysis result for SHA-256 f01593e460d6fa5c…

MALICIOUS

PDF

39.9 KB Created: 2020-04-22 00:06:04 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: aedf81b95b04a9246d1ded4a2da9c115 SHA-1: 3379804795646121745f6d92e426cad16232474e SHA-256: f01593e460d6fa5ce6864999c4b70f592125450a0c74843299a9f635df93bb3c
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to similarly structured URLs on different domains, suggesting a link farm or SEO abuse tactic. The document body is heavily obfuscated and contains embedded URLs that lead to other PDF files. The primary intent appears to be redirecting users to a network of malicious sites rather than delivering a direct payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://chefjasonhoward.com/uploads/1/3/0/6/130620881/130620881.html#exam+ref+az-+203+pdf
    • http://ahsredbirdscheer.com/uploads/1/3/0/2/130289521/73c0c24fbdb28.pdf
    • http://tambakula.org/uploads/1/3/0/9/130969455/wenesodugikad.pdf
    • http://colonoscopyspecialistmd.com/uploads/1/3/0/6/130621841/4e00b0fda2bbe2.pdf
    • http://livingh.net/uploads/1/3/0/4/130477039/3828479.pdf
    • http://g2gcarepackages.com/uploads/1/3/0/2/130289393/loxovowetu.pdf
    • http://somvetlts.com/uploads/1/3/0/6/130620899/kumusoluseviguwuwad.pdf
    • http://sienasadventures.com/uploads/1/3/0/6/130620871/b206fa0.pdf
    • http://insideoutalive.com/uploads/1/3/0/5/130539933/jabuwe_vufitomefided_wavidipaz_dolodudunavukiv.pdf
    • http://alpenhofmedia.com/uploads/1/3/0/6/130604249/nizasumujukako-madoro-jofebi.pdf
    • http://thomasmackinlawoffice.com/uploads/1/3/0/9/130969216/zifutejemawenef.pdf
    • http://northwestuu.com/uploads/1/3/0/8/130814254/3ca9a165f4.pdf
    • http://londonstreetevents.com/uploads/1/3/0/5/130543511/9026442459c6.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007421.bin
d6ea1579be2b96b91b095b33ffbb00e73f83c9f190f489cee55470f5094be608		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7421 8268 bytes

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