Malicious PDF — malware analysis report

Static analysis result for SHA-256 c936315b4b3f96ed…

MALICIOUS

PDF

40.0 KB Created: 2020-03-15 15:23:13 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: bd1463ce76eda1eb561f3bb0ec5f5dcd SHA-1: 87ecbad809de193fb8b3e44c21761f5a01a90879 SHA-256: c936315b4b3f96ed40a7c3a6844c1fa4fa1082afc8b93e10ef9794ada59e5b1b
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique commonly used for SEO manipulation or to distribute further malicious content. The ML classifier strongly indicated maliciousness. No scripts were extracted, but the sheer volume of outbound links to other PDF files suggests a coordinated effort to host or redirect to potentially harmful content.

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://hostmaster.giar.ch/uploads/1/3/0/8/130814070/130814070.html#cha+cha+group+dance+performance
    • http://webdisk.ordbrighideach.org/uploads/1/3/0/2/130289784/wumidibazuxujam.pdf
    • http://castlehallnews.com/uploads/1/3/0/3/130323666/pelur.pdf
    • http://www.zoeqjamesdesigns.com/uploads/1/3/0/4/130435624/pemojinup.pdf
    • http://christianawt.com/uploads/1/3/0/6/130605237/zukubajifu.pdf
    • http://officialgh.com/uploads/1/3/0/4/130435766/3759755.pdf
    • http://mta-sts.�konometrie.de/uploads/1/3/0/6/130604270/1668022.pdf
    • http://creartivemedia.com/uploads/1/3/0/7/130738946/3033394.pdf
    • http://fastfix.solutions/uploads/1/3/0/7/130776657/wibasiwipuzev.pdf
    • http://mo-resin.com/uploads/1/3/0/6/130639914/dekoxonivujixujuxanu.pdf
    • http://preciousthecat.com/uploads/1/3/0/5/130588847/xoxewo.pdf
    • http://brucegendelmaninsurance.com/uploads/1/3/0/5/130541209/befemibosidu.pdf
    • http://mta-sts.mail.thecornercupcoffee.com/uploads/1/3/0/5/130588394/7030731.pdf
    • http://topendtour.com.au/uploads/1/3/0/7/130739906/9c0926015602.pdf
    • http://thepowerofmemory.com/uploads/1/3/0/4/130489066/koxukeri.pdf
    • http://beerimbiber.com/uploads/1/3/0/3/130379408/fiwasagaresavez_mukolibavofu.pdf
    • http://rockyourpop.ca/uploads/1/3/0/6/130604981/judumegavifemale.pdf
    • http://fri.center/uploads/1/3/0/4/130476098/6082315.pdf
    • http://bluesprucebeeco.com/uploads/1/3/0/5/130588518/9366137.pdf
    • http://modish716.com/uploads/1/3/0/8/130813985/genusaveresiw.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_off000073a8.bin
60708c45108a492a4f7f0d9e2cbd6135f59937ae54a905b1cd2f565d7e55ac7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73A8 8096 bytes

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