Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbd59611a49561c2…

MALICIOUS

PDF

40.8 KB Created: 2020-03-29 08:14:18 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 019e5d67b1fd6bcd09d38a14a2a38ad6 SHA-1: 2e674f4f7f9a65075e880868f5f231606ae2a48a SHA-256: cbd59611a49561c27054b1d580a8aadf1398da16f2303587a9c5e51799690e89
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier strongly indicated maliciousness. The document body contains garbled text and a URL, suggesting it's not intended for direct user consumption but rather as a vehicle for link distribution. 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://eshibofengyunzuqiu.br3h.com/uploads/1/3/0/7/130775737/130775737.html#que+significa+sociom%C3%A9trico
    • http://www.cancerresourcecenterofwesternmaine.org/uploads/1/3/0/2/130289205/wenekopenoda_voraponejur_boxibet_katelemumoli.pdf
    • http://thejuliancohen.com/uploads/1/3/0/4/130435892/xerajom.pdf
    • http://micahjoel.net/uploads/1/3/0/5/130547728/9a12c0e3.pdf
    • http://niallbishop.com/uploads/1/3/0/6/130621815/88d4aea807c029f.pdf
    • http://game4real.net/uploads/1/3/0/6/130639728/perofipidiwedunexako.pdf
    • http://pioneerriskmgmt.net/uploads/1/3/0/7/130775727/3048440.pdf
    • http://cottonginmuseum.org/uploads/1/3/0/5/130550847/muluweduxuzur.pdf
    • http://www.trueleadershipconference.com/uploads/1/3/0/5/130551402/4185435.pdf
    • http://creativesmut.com/uploads/1/3/0/4/130488470/vezagot.pdf
    • http://wheelerldealer.com/uploads/1/3/0/2/130292013/vimafe.pdf
    • http://arminsuranceplan.com/uploads/1/3/0/5/130539102/698137.pdf
    • http://alamodecollections.com/uploads/1/3/0/7/130776451/1060065.pdf
    • http://josephina.ballerina.com/uploads/1/3/0/4/130476407/c70f3.pdf
    • http://getprofessionaldrivingschool.com/uploads/1/3/0/3/130379163/norejumelizita.pdf
    • http://striveprogram.com/uploads/1/3/0/2/130287371/1386117.pdf
    • http://sweetwillowsoap.com/uploads/1/3/0/5/130543279/8e10e0562d7f.pdf
    • http://81navywharf.com/uploads/1/3/0/5/130546024/ninarukixujiso.pdf
    • http://jaimert.com/uploads/1/3/0/4/130483469/b519244e2077.pdf
    • http://www.epiphco.com/uploads/1/3/0/7/130739240/vukowabak.pdf
    • http://richmondgastropub.ie/uploads/1/3/0/4/130435641/5eb5c6468d327.pdf
    • http://www.autismwaitlistinterventiononline.com/uploads/1/3/0/2/130288310/situvovi.pdf
    • http://datadynamo.org/uploads/1/3/0/6/130639786/berafi.pdf
    • http://thecountrybaker.com/uploads/1/3/0/7/130739074/wanogama.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_off00007402.bin
65bfb27e9fecdc987d94ccee0998c9877d374df4ca127281f96c71a772f62e7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7402 8744 bytes

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