Malicious PDF — malware analysis report

Static analysis result for SHA-256 a18ea490f9acf78e…

MALICIOUS

PDF

35.8 KB Authoring application: Adobe PDF Library 9.0
MD5: 44b5edbee4ff0359c993e08fb0838d14 SHA-1: 94cc98dbf02c080fff19478a5290dabd162a7eb0 SHA-256: a18ea490f9acf78e1b269815d07e5af3ec8a4e48b1ab872b963c5c4d04deb59e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains a large number of embedded links pointing to external PDF files hosted on various domains. This behavior is indicative of a link farm designed to distribute malicious content or redirect users to phishing sites. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the malicious classification. No scripts were extracted from this sample, and the document body contained mostly garbled text.

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://highspeedstaffingco.tech/uploads/1/3/0/4/130436204/5597724.pdf
    • http://nmis.co/uploads/1/3/0/6/130620854/344322.pdf
    • http://mountvistapersians.com/uploads/1/3/0/5/130588624/pilulisekogoro_bonatawileve_ragajezumirilu_pagovuli.pdf
    • http://gubaogongkaisaizaixiantouzhu.br3h.com/uploads/1/3/0/7/130775982/8623983.pdf
    • http://webmail.wyliesday.org/uploads/1/3/0/4/130483487/4750549.pdf
    • http://wgc-partners.com/uploads/1/3/0/4/130476469/ab691c2eeb028ef.pdf
    • http://bobbiholyoak.com/uploads/1/3/0/6/130604589/wakiwevipujeve.pdf
    • http://mrboldt.com/uploads/1/3/0/6/130621601/1556796.pdf
    • http://findhaunts.net/uploads/1/3/0/7/130775634/rezobop-gujes-mobuvabujegela-bovowubibupi.pdf
    • http://888spalift.com/uploads/1/3/0/4/130476703/1761691.pdf
    • http://marielouisehall.co.uk/uploads/1/3/0/5/130551491/4769952.pdf
    • http://leoinspired.com/uploads/1/3/0/5/130588540/63b25.pdf
    • http://sherrycountry.com/uploads/1/3/0/2/130289352/3541854.pdf
    • http://psktravel.voyagerwebsites.com/uploads/1/3/0/8/130813768/130813768.html#schizoaffective+disorder+different+from+schizophrenia

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000336d.bin
f811745e9e5aea36c55507affa0b7c291b09043a8232b8b94f1e446de8fcbdef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x336D 7736 bytes

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