Malicious PDF — malware analysis report

Static analysis result for SHA-256 abc9996160ea8ca9…

MALICIOUS

PDF

41.7 KB Authoring application: pstoedit First seen: 2020-09-24
MD5: c36af8f2e4ef1c7b4b8dd20289028cb9 SHA-1: 7103c5370b8f7785204b1411bb0acddc4040fc67 SHA-256: abc9996160ea8ca9ab78b38f2defbcc5b0ca9e6ae36cb0d8dd3cfe22c647369e
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the 'SE_LOLBIN_RUN_COMMAND' heuristic suggest malicious intent, likely related to phishing or traffic redirection. The embedded URLs are the primary indicators of compromise, pointing to a network of PDF files hosted on various domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://kinkycurlyweaves.com/uploads/1/3/0/2/130272988/6496079.pdf In PDF document text
    • http://plexormarketing.com/uploads/1/3/0/7/130775189/3539917.pdfIn PDF document text
    • http://mx.tomhagley.com/uploads/1/3/0/8/130813509/vududinulet_fetitiwid_sajaxise_neparibijozob.pdfIn macro / runtime command snippet
    • http://creacionesparis.com/uploads/1/3/0/8/130813320/1892391.pdfIn PDF document text
    • http://bartowwinds.org/uploads/1/3/0/5/130589337/degaxutedazewopir.pdfIn PDF document text
    • http://cimisupport.com/uploads/1/3/0/5/130589186/zumodiwuw.pdfIn PDF document text
    • http://dogjoytraining.com/uploads/1/3/0/6/130621857/gudejuni-zoguduvut-vasozazuje.pdfIn PDF document text
    • http://mx.sandbank-holidays.co.uk/uploads/1/3/0/7/130738723/gekikizabu_zusetofidizipil_poravev.pdfIn PDF document text
    • http://792616805228468411.com/uploads/1/3/0/3/130379155/zinawezov.pdfIn PDF document text
    • http://captreefishingboat.com/uploads/1/3/0/4/130483364/7469273.pdfIn PDF document text
    • http://boysathleticassociation.com/uploads/1/3/0/3/130313031/eff269.pdfIn PDF document text
    • http://kirstykemp.com/uploads/1/3/0/4/130477252/31558f3.pdfIn PDF document text
    • http://newcanaandems.org/uploads/1/3/0/6/130604466/kijoj-tevoxesi-pigubalosenu-falobasidore.pdfIn PDF document text
    • http://grantcardonesalestraining.ca/uploads/1/3/0/5/130543995/karog.pdfIn PDF document text
    • http://hardywaterlily.com/uploads/1/3/0/6/130620470/4367388.pdfIn PDF document text
    • http://color-paper.com/uploads/1/3/0/5/130590555/80da32020575.pdfIn PDF document text
    • http://barbaraweiderhouse.ca/uploads/1/3/0/7/130739916/rupazijaj-zisegakevam-puwuki-suwoguxopu.pdfIn PDF document text
    • http://estebangutierrezf1.com/uploads/1/3/0/6/130604892/zedenikojivutirike.pdfIn PDF document text
    • http://annmgaffney.com/uploads/1/3/0/4/130483963/zukotetupajanuwabi.pdfIn PDF document text
    • http://bardosteamcolorado.bardosdiamondsports.com/uploads/1/3/0/4/130435701/130435701.html#hypertension+in+chronic+kidney+disease+treatmentIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003739.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3739 2864 bytes
SHA-256: 6dc6e07f93ae70488a19e8a398a1c6cda2f5723fc3d3cbe180c5afbb10c3611e
font_01_sfnt_off000043ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43AC 7968 bytes
SHA-256: ec7152c503ec44ec6c9ead4813e7465c92311d6da3ffb4727397e5574c18e4dc

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