Malicious PDF — malware analysis report

Static analysis result for SHA-256 8629f99c69cf3ab2…

MALICIOUS

PDF

38.1 KB Authoring application: PDFedit First seen: 2020-09-24
MD5: 13a0f7c79c37c63c93dc3ad625acbec4 SHA-1: 716d628f4177c2434bde8e4cf1b38491e36db382 SHA-256: 8629f99c69cf3ab2bd8011bc8e03e87a214a307dcac39ccd00cd63f14caec834
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting an attempt to manipulate search engine results or distribute malicious content. The ML classifier and ClamAV detection strongly support its malicious nature. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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://crossfitgroundworx.com/uploads/1/3/0/5/130590356/ef5031.pdf In PDF document text
    • http://nkbblockchain.com/uploads/1/3/0/7/130776406/e81b60a0eb446.pdfIn PDF document text
    • http://njprint-wear.com/uploads/1/3/0/4/130436299/mewawezuleliwi-ponogogi.pdfIn PDF document text
    • http://nashvilleperformancepsych.net/uploads/1/3/0/6/130621051/fojonodavotaw_degilozogaruz_vovikoworurat_vodoju.pdfIn PDF document text
    • http://nickysawesomewebsite.com/uploads/1/3/0/7/130738859/poxim.pdfIn PDF document text
    • http://stjohncic.org/uploads/1/3/0/4/130479312/6295519458a24a.pdfIn PDF document text
    • http://onetopshot.site/uploads/1/3/0/5/130546657/lowepazoxoroj.pdfIn PDF document text
    • http://www.photosbymelder.com/uploads/1/3/0/5/130588922/duzunejipi.pdfIn PDF document text
    • http://caresdl.com/uploads/1/3/0/7/130775162/tomoxu.pdfIn PDF document text
    • http://lebaraparfum.net/uploads/1/3/0/6/130621854/468007.pdfIn PDF document text
    • http://fkox.com/uploads/1/3/0/5/130590054/770398.pdfIn PDF document text
    • http://namecoinforum.net/uploads/1/3/0/6/130605521/jugikewumixaf-dajagi-pugavese.pdfIn PDF document text
    • http://learnsoccer.org/uploads/1/3/0/5/130541116/1217356.pdfIn PDF document text
    • http://sandiegotopdentist.com/uploads/1/3/0/7/130776716/bazizafijapupet-lokavowasogen-nimozedexo-jinigodumu.pdfIn PDF document text
    • http://mystparanormal.com/uploads/1/3/0/5/130542985/7837014.pdfIn PDF document text
    • http://bardosteamcolorado.bardosdiamondsports.com/uploads/1/3/0/3/130379065/130379065.html#calculating+mode+for+grouped+dataIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002bb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BB5 2616 bytes
SHA-256: d907c570f1f8f2d62f38d7529dbf77de46ca3a1917ec53aca7a78bae59874b04
font_01_sfnt_off000037e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37E0 8508 bytes
SHA-256: ce2a53d9df756c53240d835973cb7266875e52a1bca7680f92d18bb2e91ec74c