Malicious PDF — malware analysis report

Static analysis result for SHA-256 c03cdc36deae111f…

MALICIOUS

PDF

31.7 KB Created: 2020-06-04 02:08:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd0d59989a7284e9cfcd6ad830a93d07 SHA-1: 1f7803a6ac3a81da8504a04f0d03e6249858b392 SHA-256: c03cdc36deae111facc4d2a15ab185eb8dbe7091b53e2caed4f53e4a498f0806
92 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 by the PDF_SEO_LINK_FARM heuristic. The ML classifier also strongly indicated maliciousness. The primary purpose appears to be directing users to a network of linked websites, likely for SEO manipulation or to host further malicious content. No scripts were extracted from this sample.

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://74-123-78-189.mgwnet.com/uploads/1/3/0/5/130543155/130543155.html#rom+kof+2002+magic+plus
    • http://eslteachersiri.com/uploads/1/3/0/5/130539696/lufowunenumegewodoxi.pdf
    • http://evq.ro/uploads/1/3/0/5/130551091/kenuweruluriwi.pdf
    • http://hostmaster.kunamofilm.de/uploads/1/3/0/3/130379798/safabe.pdf
    • http://etisalat971.com/uploads/1/3/0/5/130588579/1965974.pdf
    • http://nl.mediardenne-services.com/uploads/1/3/0/2/130270823/5154427.pdf
    • http://buttefamilydentistry.com/uploads/1/3/0/8/130813582/3067383.pdf
    • http://intheblackfinancialmanagement.com/uploads/1/3/0/5/130538953/nuxexusalexiwevila.pdf
    • http://cancunairporttaxis.com/uploads/1/3/0/7/130775136/rabedexiboteja.pdf
    • http://74-123-78-189.mgwnet.com/uploads/1/3/0/5/130543155/terms.html
    • http://74-123-78-189.mgwnet.com/uploads/1/3/0/5/130543155/dmca.html
    • http://74-123-78-189.mgwnet.com/uploads/1/3/0/5/130543155/policy.html
    • https://lusalijofef.files.wordpress.com/2020/06/53436381880.pdf
    • https://kuxogufebaji.files.wordpress.com/2020/06/49488360769.pdf
    • https://rikafefi.files.wordpress.com/2020/06/lizorogi.pdf
    • https://busakokopego955232006.files.wordpress.com/2020/06/79442594144.pdf
    • https://sojukitibo.files.wordpress.com/2020/06/56035642429.pdf
    • https://boxagoboloj.files.wordpress.com/2020/06/xozasusomenag.pdf
    • https://xunukadamed.files.wordpress.com/2020/06/70401515076.pdf
    • https://tukevorigo.files.wordpress.com/2020/06/dofitusafuveketex.pdf
    • https://gunusubupele.files.wordpress.com/2020/06/pisudimexusovabudutaf.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_off000051c2.bin
1c2652667767b70628e92fb6318ba7f2ab729ad7ad4104050e563dd293d0064a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51C2 9672 bytes

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