Malicious PDF — malware analysis report

Static analysis result for SHA-256 8058567fa93beca5…

MALICIOUS

PDF

53.8 KB Authoring application: PDFedit
MD5: b60aa03a9a72a38c3079fdb1b7b9cf88 SHA-1: c05ed20e5164de0f19f6c2b5ef4b391126ea9fc2 SHA-256: 8058567fa93beca5f43d478aa91473bf8c779d551db1c460c44386158bfe6761
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files, indicating a link farm designed for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, consistent with phishing or malware distribution. While no scripts were explicitly extracted, the structure and embedded URLs are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://silvermongoose.com/uploads/1/3/0/6/130621354/kotavimetu_xutunanuza_punak_guzibezites.pdf
    • http://squad-online.com/uploads/1/3/0/7/130775694/rativoter.pdf
    • http://thinkmundo.com/uploads/1/3/0/3/130379293/nudotolixof_rikogaruronazen_nagulaju_motalaxet.pdf
    • http://floridajewishfunerals.com/uploads/1/3/0/7/130775705/rawoxodi.pdf
    • http://milestoneshomeinspections.net/uploads/1/3/0/6/130639603/8eed1f5728911fc.pdf
    • http://realitywhisperer.com/uploads/1/3/0/3/130313434/20adcd919.pdf
    • http://internalalignment.net/uploads/1/3/0/5/130590496/gapadizapaxamo-pomaxeku-jesedulikaxati.pdf
    • http://ececonline.org/uploads/1/3/0/5/130590019/sobew.pdf
    • http://barbaraannkipferart.com/uploads/1/3/0/6/130639181/2963173.pdf
    • http://shelfstalker.net/uploads/1/3/0/7/130776122/7032047.pdf
    • http://commerce-runningabusinessunit.com/uploads/1/3/0/2/130271030/529830a1eeafc7.pdf
    • http://seesickapp.com/uploads/1/3/0/7/130738568/2cb0f8.pdf
    • http://avalarcapital.com/uploads/1/3/0/5/130540504/parumijepuvofutexog.pdf
    • http://www.iflirtbye.org/uploads/1/3/0/8/130813696/7424576.pdf
    • http://rossjarratt.com/uploads/1/3/0/5/130551775/laxudi-venolibaj.pdf
    • http://nycundergroundradio.com/uploads/1/3/0/7/130738825/kejowilomapidikuto.pdf
    • http://punkcentre.com/uploads/1/3/0/6/130605482/8321716.pdf
    • http://ancestryseekers.com/uploads/1/3/0/6/130622033/563308ee04afb5c.pdf
    • http://theothertd.com/uploads/1/3/0/5/130551523/130551523.html#dallas+stars+lines+2018-19
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012e0.bin
9b1ea17d3d1253d5daee0c64ec8dd5e8cf7a72300168f2cd928eff4c6855b9bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E0 9404 bytes
font_01_sfnt_off00008f62.bin
7863b829de04ea8b7f5be4d5dae43fa62182e7611f0c3a300d10b316d27db496		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F62 2732 bytes

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