Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dc5b19d6fa0aea5…

MALICIOUS

PDF

40.7 KB Authoring application: Pdftk
MD5: 4f28665b39d936bf7506ee18a237e40b SHA-1: 6273ddb3c9b0a70f7b046ce2f6c0d84083996b46 SHA-256: 0dc5b19d6fa0aea5b95c2ff3e1e761aecb8d17468e123985d7a9d18a8f020412
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier strongly indicate maliciousness, with the ClamAV signature suggesting a phishing or traffic redirection purpose. The embedded URLs are likely used to distribute further malware or lead users to phishing sites.

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://www.expogeografica.co/uploads/1/3/0/8/130874060/e28eda49332bad7.pdf
    • http://4lawsfamily.com/uploads/1/3/0/6/130621142/eaa617.pdf
    • http://lililalune.com/uploads/1/3/0/7/130776447/bavelonozetev-rupav.pdf
    • http://missfoggscience.com/uploads/1/3/0/3/130323743/1225204.pdf
    • http://blesscedbeads.com/uploads/1/3/0/6/130639531/4f9fdc.pdf
    • http://blackandchosen.com/uploads/1/3/0/4/130488332/daduwosirof.pdf
    • http://karibuconsult.com/uploads/1/3/0/6/130639540/f2224.pdf
    • http://therealmick.com/uploads/1/3/0/5/130588426/zikevofebaluro.pdf
    • http://rebylez.store/uploads/1/3/0/7/130740256/sidotutal_korej_fapiv_xuvavuvojipo.pdf
    • http://www.lillichart.com/uploads/1/3/0/7/130739621/a5fe08c.pdf
    • http://tkrealtysolutionssa.com/uploads/1/3/0/5/130539428/2c35c996968d0a6.pdf
    • http://mcaroadsidedeals.com/uploads/1/3/0/4/130435573/nejodi_tokiw.pdf
    • http://www.kimopics.store/uploads/1/3/0/6/130620390/8874328.pdf
    • http://sporkbooks.com/uploads/1/3/0/4/130490193/92377d87.pdf
    • http://narrinspiceandsauce.com/uploads/1/3/0/4/130488172/webaxudad.pdf
    • http://monetdiamondscollection.com/uploads/1/3/0/5/130547024/2608821.pdf
    • http://vps6-internal-admins.pleasingfood.com/uploads/1/3/0/2/130272573/130272573.html#12+th+ncert+biology+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000044c6.bin
18eac8c3b3000c0726605b4b5e02cae57339ec235547329097e5766d714bfc69
pdf-font-stream PDF embedded font (sfnt) at offset 0x44C6 7564 bytes