Malicious PDF — malware analysis report

Static analysis result for SHA-256 de13226ccc315b05…

MALICIOUS

PDF

40.4 KB Created: 2020-03-30 02:07:33 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 0da1895aae7e3a2b6fe9b597f8605a5e SHA-1: c06034fe64ea9f3aa3e8ffd3ad00c8aa33c3b928 SHA-256: de13226ccc315b052365817835aeaef3bcddc70071476711f5f24d8f9e162175
94 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. The embedded document body text, though corrupted, contains references to URLs that are part of this link farm. This suggests the document's primary purpose is to redirect users to a network of websites, likely for malicious SEO or to host further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://wcd-3ni9vm8.mgh-r.ch/uploads/1/3/1/4/131453260/131453260.html#lg+dryer+message+d90
    • http://massageburleson.com/uploads/1/3/0/9/130969206/xogek_wumubu_pitoxitinoto_xagovodegufivij.pdf
    • http://cathedralmountainknifeworks.com/uploads/1/3/0/3/130379361/papebasevofokaziwizu.pdf
    • http://aligningwithlove.com/uploads/1/3/0/7/130776804/66720.pdf
    • http://riversongfarm.com/uploads/1/3/0/4/130483491/lilakufemumobiti.pdf
    • http://youcanliveagain.com/uploads/1/3/0/2/130289803/nosijuwupile.pdf
    • http://wendyohlendorf.com/uploads/1/3/0/5/130539238/gijopomebapenepuxo.pdf
    • http://nvrset.com/uploads/1/3/0/8/130814868/7065336.pdf
    • http://thedivinefeminineuk.com/uploads/1/3/0/4/130476760/giletujibukizovofu.pdf
    • http://callthehit.com/uploads/1/3/1/0/131070805/5527676.pdf
    • http://cyber-scribble.com/uploads/1/3/0/3/130323341/pizafuperam.pdf
    • http://dyercommunityfoundation.com/uploads/1/3/1/3/131380279/sipifol.pdf
    • http://swiftascentmarketing.com/uploads/1/3/1/3/131379696/pesas.pdf
    • http://bridalcastledecoration.com/uploads/1/3/0/8/130873957/dimagiz_nokidowujesa_dedaromelib_wusivukiren.pdf
    • http://libertypa2016.com/uploads/1/3/0/7/130738917/wedekufadonerus.pdf
    • http://polarcapcompany.com/uploads/1/3/0/4/130488565/3757076.pdf
    • http://leanrxfit.com/uploads/1/3/0/4/130483114/b2b9a564.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_off00007484.bin
f87c3fd1d69712e549a581768f2862f7e9f3d63c4297a29c2e933f3b39252df3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7484 8356 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.