Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2908011161851a1…

MALICIOUS

PDF

37.3 KB Created: 2020-03-07 10:12:50 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b4a9689a5b122e15ed21c404553ddf52 SHA-1: bd9a076c14b9b7a0d937754613da98117ba988a2 SHA-256: e2908011161851a1e9377a298cfadb3404c4d0475949fa915be6535d1ad762d6
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also strongly indicated maliciousness. The document body contains garbled text but also includes the URL http://www.alsford.co.uk/uploads/1/3/0/2/130270768/130270768.html#arduino+voltage+sensor+circuit, which is among the extracted URLs. This suggests the PDF is designed to redirect users to a network of linked pages, likely for malicious purposes such as phishing or malware distribution.

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://www.alsford.co.uk/uploads/1/3/0/2/130270768/130270768.html#arduino+voltage+sensor+circuit
    • http://theartofmindfulnessliving.ca/uploads/1/3/0/6/130640031/947f482260.pdf
    • http://portfolio-mariafumagallli.com/uploads/1/3/0/2/130288498/mopuso_jatexiwok_guzosijuzosotod_vebunejegagiza.pdf
    • http://ppdrenterprises.com/uploads/1/3/0/4/130436050/717826.pdf
    • http://viel.co/uploads/1/3/0/6/130639350/7148113.pdf
    • http://mooreequineevents.com/uploads/1/3/0/6/130639411/7d7d1.pdf
    • http://bodyworkbybarb.com/uploads/1/3/0/5/130588451/dd1445ab5.pdf
    • http://wind-surfing.com/uploads/1/3/0/8/130874287/8327168.pdf
    • http://comoxvalleyendoflifecaredoulaservices.com/uploads/1/3/0/6/130639764/7072930.pdf
    • http://attorneychannel.net/uploads/1/3/0/4/130476066/6377c083c.pdf
    • http://xiaodiya.com/uploads/1/3/0/8/130813859/xubujufajusowila.pdf
    • http://legacytransportation-freightbrokerage.com/uploads/1/3/0/5/130544385/49a511.pdf
    • http://korolevstvo.website/uploads/1/3/0/2/130288364/5391690.pdf
    • http://kumaritsolutions.com.au/uploads/1/3/0/3/130379246/3546739.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_off0000696b.bin
af2da02805af25e634f2da5f7ec67d49c552015527104616ab423f94b2c8b39d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x696B 7952 bytes

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