Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0194d4ebb650dd1…

MALICIOUS

PDF

84.2 KB Created: 2020-04-03 16:52:12 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a80183009f1e34db6552fd533f53a74f SHA-1: 5e50f3af9dd540a18b60ebc236e46ddb39875998 SHA-256: f0194d4ebb650dd12c01d96ae56c373712243194fbbf2a1bdb928aca7e931d8a
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ML classifier also strongly indicated maliciousness. The primary attack pattern appears to be SEO-based link farming, designed to redirect users to potentially malicious sites or to host further attack stages. No scripts were extracted, limiting the analysis of direct payload execution.

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://claritytaxadvisors.com/uploads/1/3/1/3/131380998/131380998.html#happy+birthday+song+peep+show
    • http://eduexchange.org/uploads/1/3/0/2/130291624/6d141850.pdf
    • http://api1169.org/uploads/1/3/0/6/130621947/ketarinow-gifebusotogimu.pdf
    • http://rockhillbbq.net/uploads/1/3/0/7/130739918/641856.pdf
    • http://mustangmg.com/uploads/1/3/1/4/131409761/fexirebejodepujara.pdf
    • http://thearieldiamonds.com/uploads/1/3/0/7/130739286/neforabolunetafatuxi.pdf
    • http://greetingcardpackaging.com/uploads/1/3/1/0/131070846/378799.pdf
    • http://cabinet-one.com/uploads/1/3/0/2/130272233/5253961.pdf
    • http://happywrappysg.com/uploads/1/3/1/0/131070112/22f3b5e7b5e81.pdf
    • http://crownngloryconsulting.com/uploads/1/3/0/5/130539345/83bf9dec2.pdf
    • http://beyondthoughtproductions.com/uploads/1/3/0/7/130738823/7975358.pdf
    • http://ogffl.com/uploads/1/3/1/1/131163981/pisevas.pdf
    • http://drfixcredit.com/uploads/1/3/0/3/130379115/tosegubejogivum.pdf
    • http://antonyaberry.com/uploads/1/3/1/3/131383462/loxija_pozorulajoxo_zekisaxared_bekazumukagojil.pdf
    • http://passievoortekst.nl/uploads/1/3/0/4/130483454/285c571417f8306.pdf
    • http://luvpetspetsitting.com/uploads/1/3/0/6/130605041/pulagawoka.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_off0001212e.bin
c5897feaaf2aec2170b83cd00787fabe19ff8ec34f509f65a165b26699a4bb1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1212E 9484 bytes

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