Malicious PDF — malware analysis report

Static analysis result for SHA-256 7205bfddd94bf45e…

MALICIOUS

PDF

38.7 KB Created: 2020-05-21 07:00:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d64b032a26b35c418cd64c1141f07443 SHA-1: 9e0bee86e384d811c9fb65dad6adb42cbd4140d3 SHA-256: 7205bfddd94bf45ef966c5648e22075544d6714910fe8ed0724fc6f6c8b31585
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of external links, characteristic of a link farm designed to redirect users to potentially malicious content. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of numerous external PDF links. While no scripts were directly extracted, the document's structure and embedded URLs suggest an attempt to lead users to a network of compromised or malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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
  • 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 http://technoliberty.net/uploads/1/3/0/8/130874244/130874244.html#number+line+template+0-20
    • http://webstervip.com/uploads/1/3/1/4/131405962/3809972.pdf
    • http://mingocarecbd.com/uploads/1/3/0/7/130776300/956065.pdf
    • http://joychristiancenterchurch.com/uploads/1/3/1/6/131607866/rasigij_fowivunujilewa.pdf
    • http://by-silverado-beauty.com/uploads/1/3/0/5/130551011/235790.pdf
    • http://rippletheatreproject.com/uploads/1/3/1/3/131398358/7a7ccf.pdf
    • http://henryapark.com/uploads/1/3/1/6/131606133/25bde17244.pdf
    • http://haitianchristianchurchaz.com/uploads/1/3/0/6/130639131/2994985.pdf
    • http://bornagaincreation.com/uploads/1/3/0/4/130435553/9828200.pdf
    • http://erfashionbtq.net/uploads/1/3/0/5/130543383/951190.pdf
    • http://bryan-conklin.com/uploads/1/3/1/4/131438517/4810784.pdf
    • http://multiiverse.com/uploads/1/3/1/6/131637325/lilelujeromu-miraviji.pdf
    • http://jordansofasheboro.com/uploads/1/3/0/5/130588435/jipel.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ea8.bin
e14874eef5d9b8bd43a81d9f123ba8005d694dceeb4ee4d7bf4049bcdf3fd385
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EA8 9676 bytes