Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a61b4e0bae7cbdd…

MALICIOUS

PDF

43.1 KB Authoring application: Poppler-utils
MD5: 75028e5b5e501722b4463d1584fb374e SHA-1: 430f9f6c93a7b418226c82d5150d98b630084f79 SHA-256: 6a61b4e0bae7cbdda3dac7587c0ef419db1a069f5440990914a759e2c39de201
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, a technique often used for SEO poisoning or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to potentially harmful 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://bcdt.co.uk/uploads/1/3/0/5/130590724/tilakaxexokusagibu.pdf
    • http://simbachile.com/uploads/1/3/0/4/130492689/1681362.pdf
    • http://www.debzcabello.com/uploads/1/3/0/2/130288592/8750901.pdf
    • http://lackfocus.net/uploads/1/3/0/4/130483428/danetolabelipo.pdf
    • http://blueroseprintlab.com/uploads/1/3/0/6/130639304/naxorazenafok_xorubufaw.pdf
    • http://naema.ca/uploads/1/3/0/3/130313561/4395390.pdf
    • http://hostmaster.markdoodesplanning.co.uk/uploads/1/3/0/5/130588281/lusamojibad.pdf
    • http://etierneyhamilton.com/uploads/1/3/0/2/130270813/wilejaxanemalumol.pdf
    • http://moniquesamonephotographyblog.com/uploads/1/3/0/7/130776743/lemudefar.pdf
    • http://www.madamedulion.com/uploads/1/3/0/3/130312983/rututuxajoxofezeliv.pdf
    • http://alexandrafloralevents.com/uploads/1/3/0/8/130873779/a0484d4eb38b.pdf
    • http://superwomenintraining.org/uploads/1/3/0/4/130436172/78576186f.pdf
    • http://wabashtees.com/uploads/1/3/0/5/130588586/9261204.pdf
    • http://ravaflav.net/uploads/1/3/0/3/130312965/jonojofovi.pdf
    • http://luxefamilygetaways.com/uploads/1/3/0/8/130814189/5808476.pdf
    • http://kaltsden.store/uploads/1/3/0/5/130538902/d07dd60449f4b8.pdf
    • http://orzuarts.com/uploads/1/3/0/6/130621684/80d63d.pdf
    • http://www.meckatuncc.org/uploads/1/3/0/6/130622063/kojaxonixunej.pdf
    • http://mail.leynavbfloraldesigns.com/uploads/1/3/0/4/130483373/22091.pdf
    • http://adrianleeproperty.com/uploads/1/3/0/6/130604858/tidusiniwev-juxidor.pdf
    • http://mta180.qualitynow.net/uploads/1/3/0/3/130323642/130323642.html#ancient+egypt+bc+timeline

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004804.bin
37e9e0b4e11c436f5a23b343840c6b1fcc5a2a76ae285ab725d2b6894c5a3942		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4804 8416 bytes

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