Malicious PDF — malware analysis report

Static analysis result for SHA-256 291a0ee323569059…

MALICIOUS

PDF

39.8 KB Authoring application: ImageMagick
MD5: bc4892746fbd11fc9c5d7fde612f8704 SHA-1: 946e83d3ce88fafd020fb89b66e11d75608c53cf SHA-256: 291a0ee323569059149121723cb17d361d06fe83bd3f50aab56d54a498a4f913
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains a large number of embedded links to external PDF files hosted on various domains, a technique often used for SEO poisoning or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body text, though truncated, mentions 'ocr in adobe acrobat reader dc', which could be a lure to trick users into downloading or interacting with malicious 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.
  • 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://kuwtjd.com/uploads/1/3/0/5/130550980/527c41.pdf
    • http://studentsmentalhealth.net/uploads/1/3/0/5/130541623/6ca2a14.pdf
    • http://karmaffne.com/uploads/1/3/0/7/130740082/gidelomulomo-tazasifinipivu-velagiboked.pdf
    • http://advancedbiocomputing.org/uploads/1/3/0/8/130874569/738a74467.pdf
    • http://davebaskind.com/uploads/1/3/0/5/130544754/45183f.pdf
    • http://orencostation.org/uploads/1/3/0/7/130740054/8358667.pdf
    • http://nickgreen68.com/uploads/1/3/0/7/130739024/rumeku.pdf
    • http://niamhmaileygraphicdesign.com/uploads/1/3/0/7/130740429/2155066.pdf
    • http://reklam5.net/uploads/1/3/0/7/130739387/wavoz.pdf
    • http://msharrisfirstgrade.com/uploads/1/3/0/6/130604482/kuvomazag.pdf
    • http://thefishingday.com/uploads/1/3/0/6/130604227/834961.pdf
    • http://taylorcountydemocraticparty.com/uploads/1/3/0/4/130483299/korebid.pdf
    • http://homecyberprotect.com/uploads/1/3/0/7/130775675/b4eaf82d56.pdf
    • http://cpaforfamilywealth.com/uploads/1/3/0/6/130621352/posupaw-tapimajadofixaz.pdf
    • http://mymcpa.com/uploads/1/3/0/2/130288926/0c5406725.pdf
    • http://offer.directory/uploads/1/3/0/4/130483552/milujalu.pdf
    • http://mypathwaytosuccess.org/uploads/1/3/0/7/130775737/robex.pdf
    • http://beyourselfie.net/uploads/1/3/0/7/130775741/mixunolava_narugigipalo_tipalifitosun_xilokefiso.pdf
    • http://officialbrookekelly.com/uploads/1/3/0/4/130489830/wudolilaga.pdf
    • http://beyondinclusion.org/uploads/1/3/0/5/130590195/xurusa-sujapopameredox-gorediwilowi.pdf
    • http://morongovalley.org/uploads/1/3/0/4/130436089/25c56602fe24e3.pdf
    • http://misssupremepurityqueen.com/uploads/1/3/0/3/130313031/130313031.html#how+to+do+ocr+in+adobe+acrobat+reader+dc
    • http://orencostation.org/upload

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003996.bin
f6ce2a9c39ffb77bcfd408c744ccf3c0747f2df9f7c47e490ebade71b68cd9d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3996 8520 bytes

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