Malicious PDF — malware analysis report

Static analysis result for SHA-256 995a1c11bcd2c114…

MALICIOUS

PDF

38.7 KB Created: 2020-03-12 11:46:55 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 16bc56e985a8bb583e042da473aba5af SHA-1: 7a8f2a54cfd65b258fe251da27be638fe20a8ca0 SHA-256: 995a1c11bcd2c114f159158f62f0d8176c977151c7427ae6db204300b6aab167
94 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are numerically or generically named, suggesting a link farm for SEO manipulation or to host malicious content. The document body, though partially corrupted, contains a reference to a movie, likely a lure to entice users to click on the embedded links. The ML classifier 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://weshpop.com/uploads/1/3/0/7/130739699/130739699.html#ali+baba+and+the+forty+thieves+1954+full+movie
    • http://victoryhealthcarecenter.com/uploads/1/3/0/6/130605089/vewulixoxaraze_gudogifadu_lazipubuda_gugixunekuxazor.pdf
    • http://heartstrings.shop/uploads/1/3/0/6/130604074/pugetepopaxovumupuzo.pdf
    • http://www.hillcountrybaptistassociation.com/uploads/1/3/0/6/130621814/3593015.pdf
    • http://tattoovictoriatexas.com/uploads/1/3/0/6/130621989/madegos-jatavajuwak.pdf
    • http://recycledbags.net/uploads/1/3/0/5/130543462/pafowaxetakewa.pdf
    • http://dhshighschool.com/uploads/1/3/0/2/130291585/selujapaxututarujew.pdf
    • http://eplpna.com/uploads/1/3/0/4/130476814/3105968.pdf
    • http://myemilyknight.org/uploads/1/3/0/4/130476050/tumozizekebawiz.pdf
    • http://starbagsptsd.com/uploads/1/3/0/6/130620976/wubupomanewuwad.pdf
    • http://74-123-79-214.mgwnet.com/uploads/1/3/0/5/130551282/d674e65b0b594.pdf
    • http://mta-sts.mail.medesignusc.com/uploads/1/3/0/5/130550797/lexatal_sifudegolazivi.pdf
    • http://moderncountrydoctor.ca/uploads/1/3/0/5/130588266/950554.pdf
    • http://www.fifipheromone.com/uploads/1/3/0/6/130604394/78e384b3.pdf
    • http://tmctouch.tech/uploads/1/3/0/6/130640090/bebebesujotetu_kulukunipumikuz_lenitozak_mipanoxofas.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_off00006dad.bin
d19ec0cacff5eac25554a689336b5f2f95e2ba0cc82777ea67791609080a194f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DAD 8316 bytes

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