Malicious PDF — malware analysis report

Static analysis result for SHA-256 270b665e37de4afc…

MALICIOUS

PDF

36.4 KB Created: 2020-04-14 17:12:18 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 05d7cae9ad200f31e585a860a8845c06 SHA-1: 937de78c9c627069f797d667836db4d2a50f95b1 SHA-256: 270b665e37de4afcfe7a60c8cf2ddd7e39b2a690ad6d64633125382f85d4a174
92 Risk Score

Malware Insights

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

The PDF contains a large number of 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 a mix of technical information and what appears to be obfuscated text, further suggesting a non-legitimate purpose.

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://roofingclarksville.com/uploads/1/3/0/3/130323554/130323554.html#what+is+a+template+strand+in+biology
    • http://uptownchs.org/uploads/1/3/0/3/130323455/89fe50be.pdf
    • http://katlopesmusic.com/uploads/1/3/0/9/130969158/4002243.pdf
    • http://downtownldnliving.ca/uploads/1/3/0/7/130776719/4018052.pdf
    • http://carltgoss.com/uploads/1/3/0/5/130588894/ed65530.pdf
    • http://colehuling.com/uploads/1/3/1/3/131379830/demipuru.pdf
    • http://heartsel.com/uploads/1/3/0/9/130969280/pezifum-nitupisesazes-dusorudas-joxozesax.pdf
    • http://creolegolddelivery.com/uploads/1/3/0/5/130541924/966cb8fe.pdf
    • http://rolloffdumpsterrentalsanantonio.com/uploads/1/3/0/4/130477882/boboxelafixo.pdf
    • http://altekameraden.org/uploads/1/3/0/3/130379611/bekopukoteju.pdf
    • http://appreciationmedal.com/uploads/1/3/0/6/130621989/wuzivusu-felidazonawime.pdf
    • http://great-truckslowprices.com/uploads/1/3/1/4/131438478/nuviw_muwom.pdf
    • http://mhsportevents.com/uploads/1/3/0/5/130588705/wedafiz.pdf
    • http://good49289.com/uploads/1/3/1/3/131380641/mowonud_zowimufo_kelixitefa_dotigizebo.pdf
    • http://yoyabusinessconsultancy.com/uploads/1/3/0/3/130379151/perekarat_vujitofuxo.pdf
    • http://houseforsalellc.com/uploads/1/3/1/4/131454420/migerutikuje.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_off00006706.bin
cb925b51b85ba98472e32294be6e1b7d59ee6af94a707e6a1ad4f7f30746a102		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6706 7764 bytes

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