Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ac2b1db85ef8416…

MALICIOUS

PDF

41.8 KB Created: 2020-03-30 07:07:00 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 456076e139432e16db8f73839047246d SHA-1: cc078a9e3b96ffe70aebef7a0577291e7f6b2d9a SHA-256: 0ac2b1db85ef841617d05d723751c8f7340d1d0289f06a09643014cd2d67d79b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a large number of embedded external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. These links point to various domains, each hosting a PDF file, suggesting a coordinated effort to manipulate search engine results or distribute malicious content. The ML classifier also strongly indicated maliciousness.

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://74-123-73-16.mgwnet.com/uploads/1/3/0/3/130323707/130323707.html#los+tipos+y+caracteristicas+de+las+organizaciones+mercantiles+en+mexico
    • http://gamechangerspodcast.net/uploads/1/3/0/4/130478648/8caba.pdf
    • http://joeldoodles.com/uploads/1/3/0/6/130604420/95fda50f6.pdf
    • http://morangroup.com/uploads/1/3/1/3/131380344/9173407.pdf
    • http://supportrealheroes.com/uploads/1/3/0/7/130739579/4423894.pdf
    • http://beyondcleanmaids.ca/uploads/1/3/0/4/130476503/7c87d.pdf
    • http://maxmachineinc.com/uploads/1/3/0/7/130775295/79d19b.pdf
    • http://proactivesynergysolutions.com/uploads/1/3/0/7/130739445/0d5a32c09a9e4.pdf
    • http://helpinghanddeliveries.com/uploads/1/3/0/7/130738812/58253dc1e6d36a.pdf
    • http://probisma.com/uploads/1/3/0/3/130313021/gasasurox.pdf
    • http://gaygirlsofglos.com/uploads/1/3/0/6/130604580/wenuxo.pdf
    • http://sunshineorganizingsupport.com/uploads/1/3/0/6/130604903/wisatodivodar.pdf
    • http://tropictrends.net/uploads/1/3/0/4/130479389/femagofope.pdf
    • http://seaspaorganics.com/uploads/1/3/0/7/130775123/nebetomixi_logowibarutet.pdf
    • http://bridgepilateswa.com/uploads/1/3/1/0/131070645/volar_wofovikufa_sixamojimufavit_jazefekex.pdf
    • http://www.institutodeformacion.net/uploads/1/3/0/4/130476885/wezasal.pdf
    • http://harbourfrontcondostoronto.com/uploads/1/3/0/3/130323151/7734530.pdf
    • http://wholehealthfitnesszonellc.com/uploads/1/3/0/7/130740510/5113560.pdf
    • http://lovemesolutions.com/uploads/1/3/0/2/130289236/wugukamivaxawanel.pdf
    • http://wmspec.com/uploads/1/3/0/6/130639334/0d3db5a5cb3f.pdf
    • http://weymannopalenica.pl/uploads/1/3/0/8/130814078/1909273.pdf
    • http://yogicmindfulness.com/uploads/1/3/1/1/131163833/b4e8d.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_off000079be.bin
a687d80d0cdf28d54a74cb7956e22eec29d232faae034bf0df35e974804ac219		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79BE 7968 bytes

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